Core: Clean up here and there.

*replase postfix iterator increment\decrement with prefix in cycles
*replase strlen(*char) != 0 with *char[0] != '\0'
*replase strlen(rStr.c_str()) with rStr.length()

src/server/game/AI/SmartScripts/SmartAI.cpp

@@ -235,7 +235,7 @@ void SmartAI::EndPath(bool fail)
             }
         }else
         {
-            for (ObjectList::iterator iter = targets->begin(); iter != targets->end(); iter++)
+            for (ObjectList::iterator iter = targets->begin(); iter != targets->end(); ++iter)
             {
                 if (GetScript()->IsPlayer((*iter)))
                 {
@@ -401,7 +401,7 @@ bool SmartAI::IsEscortInvokerInRange()
             }
         }else
         {
-            for (ObjectList::iterator iter = targets->begin(); iter != targets->end(); iter++)
+            for (ObjectList::iterator iter = targets->begin(); iter != targets->end(); ++iter)
             {
                 if (GetScript()->IsPlayer((*iter)))
                 {

src/server/game/AI/SmartScripts/SmartScriptMgr.h

@@ -1153,7 +1153,6 @@ struct SmartScriptHolder
         runOnce = false;
         link = 0;
         entryOrGuid = 0;
-        link = 0;
         event_id = 0;
         enableTimed = false;
     }

src/server/game/Battlegrounds/Battleground.cpp

@@ -1664,7 +1664,7 @@ void Battleground::SendWarningToAll(int32 entry, ...)
     data << (uint32)1;
     data << (uint8)0;
     data << (uint64)0;
-    data << (uint32)(strlen(msg.c_str())+1);
+    data << (uint32)(msg.length() + 1);
     data << msg.c_str();
     data << (uint8)0;
     for (BattlegroundPlayerMap::const_iterator itr = m_Players.begin(); itr != m_Players.end(); ++itr)

src/server/game/Battlegrounds/Zones/BattlegroundSA.cpp

@@ -261,7 +261,7 @@ void BattlegroundSA::StartShips()
 
     for (int i = BG_SA_BOAT_ONE; i <= BG_SA_BOAT_TWO; i++)
     {
-        for (BattlegroundPlayerMap::const_iterator itr = GetPlayers().begin(); itr != GetPlayers().end();itr++)
+        for (BattlegroundPlayerMap::const_iterator itr = GetPlayers().begin(); itr != GetPlayers().end(); ++itr)
         {
             if (Player* p = ObjectAccessor::FindPlayer(itr->first))
             {

src/server/game/Chat/Chat.cpp

@@ -653,7 +653,7 @@ bool ChatHandler::ExecuteCommandInTable(ChatCommand *table, const char* text, co
             continue;
 
         bool match = false;
-        if (strlen(table[i].Name) > strlen(cmd.c_str()))
+        if (strlen(table[i].Name) > cmd.length())
         {
             for (uint32 j = 0; table[j].Name != NULL; ++j)
             {
@@ -694,7 +694,7 @@ bool ChatHandler::ExecuteCommandInTable(ChatCommand *table, const char* text, co
 
         SetSentErrorMessage(false);
         // table[i].Name == "" is special case: send original command to handler
-        if ((table[i].Handler)(this, strlen(table[i].Name) != 0 ? text : oldtext))
+        if ((table[i].Handler)(this, table[i].Name[0] != '\0' ? text : oldtext))
         {
             if (table[i].SecurityLevel > SEC_PLAYER)
             {

src/server/game/Combat/ThreatManager.cpp

@@ -301,7 +301,7 @@ HostileReference* ThreatContainer::selectNextVictim(Creature* attacker, HostileR
     bool noPriorityTargetFound = false;
 
     std::list<HostileReference*>::const_iterator lastRef = iThreatList.end();
-    lastRef--;
+    --lastRef;
 
     for (std::list<HostileReference*>::const_iterator iter = iThreatList.begin(); iter != iThreatList.end() && !found;)
     {

src/server/game/DataStores/DBCStores.cpp

@@ -239,7 +239,7 @@ inline void LoadDBC(uint32& availableDbcLocales, StoreProblemList& errors, DBCSt
         if (FILE* f = fopen(dbcFilename.c_str(), "rb"))
         {
             char buf[100];
-            snprintf(buf, 100, " (exists, but has %d fields instead of " SIZEFMTD ") Possible wrong client version.", storage.GetFieldCount(), strlen(storage.GetFormat()));
+            snprintf(buf, 100, " (exists, but has %u fields instead of " SIZEFMTD ") Possible wrong client version.", storage.GetFieldCount(), strlen(storage.GetFormat()));
             errors.push_back(dbcFilename + buf);
             fclose(f);
         }
@@ -363,7 +363,7 @@ void LoadDBCStores(const std::string& dataPath)
     // fill data
     for (uint32 i = 1; i < sMapDifficultyStore.GetNumRows(); ++i)
         if (MapDifficultyEntry const* entry = sMapDifficultyStore.LookupEntry(i))
-            sMapDifficultyMap[MAKE_PAIR32(entry->MapId, entry->Difficulty)] = MapDifficulty(entry->resetTime, entry->maxPlayers, strlen(entry->areaTriggerText)>0);
+            sMapDifficultyMap[MAKE_PAIR32(entry->MapId, entry->Difficulty)] = MapDifficulty(entry->resetTime, entry->maxPlayers, entry->areaTriggerText[0] != '\0');
     sMapDifficultyStore.Clear();
 
     LoadDBC(availableDbcLocales, bad_dbc_files, sMovieStore,                  dbcPath, "Movie.dbc");

src/server/game/Groups/Group.cpp

@@ -1003,7 +1003,7 @@ void Group::EndRoll(Loot *pLoot)
             itr = RollId.begin();
         }
         else
-            itr++;
+            ++itr;
     }
 }
 

src/server/game/Server/Protocol/Handlers/PetHandler.cpp

@@ -678,7 +678,7 @@ void WorldSession::HandlePetAbandon(WorldPacket & recv_data)
             if (pet->GetGUID() == _player->GetPetGUID())
             {
                 uint32 feelty = pet->GetPower(POWER_HAPPINESS);
-                pet->SetPower(POWER_HAPPINESS , (feelty-50000) > 0 ?(feelty-50000) : 0);
+                pet->SetPower(POWER_HAPPINESS , feelty > 50000 ? (feelty-50000) : 0);
             }
 
             _player->RemovePet((Pet*)pet, PET_SAVE_AS_DELETED);

src/server/game/Spells/Spell.cpp

@@ -2497,7 +2497,6 @@ void Spell::SelectEffectTargets(uint32 i, SpellImplicitTargetInfo const& cur)
                             // Search for ghoul if our ghoul or dead body not valid unit target
                             if (!(m_targets.GetUnitTarget() && ((m_targets.GetUnitTarget()->GetEntry() == 26125 && m_targets.GetUnitTarget()->GetOwnerGUID() == m_caster->GetGUID())
                                 || (m_targets.GetUnitTarget()->getDeathState() == CORPSE
-                                    && m_targets.GetUnitTarget()->GetDisplayId() == m_targets.GetUnitTarget()->GetNativeDisplayId()
                                     && m_targets.GetUnitTarget()->GetTypeId() == TYPEID_UNIT
                                     && !(m_targets.GetUnitTarget()->GetCreatureTypeMask() & CREATURE_TYPEMASK_MECHANICAL_OR_ELEMENTAL)
                                     && m_targets.GetUnitTarget()->GetDisplayId() == m_targets.GetUnitTarget()->GetNativeDisplayId()))))

src/server/game/Spells/SpellEffects.cpp

@@ -999,7 +999,7 @@ void Spell::EffectDummy(SpellEffIndex effIndex)
                 }
                 case 47170:                                 // Impale Leviroth
                 {
-                    if (!unitTarget && unitTarget->GetEntry() != 26452 && unitTarget->HealthAbovePct(95))
+                    if (!unitTarget || (unitTarget->GetEntry() != 26452 && unitTarget->HealthAbovePct(95)))
                         return;
 
                         m_caster->DealDamage(unitTarget, unitTarget->CountPctFromMaxHealth(93));

src/server/game/Tools/PlayerDump.cpp

@@ -176,7 +176,7 @@ bool changeGuid(std::string &str, int n, std::map<uint32, uint32> &guidMap, uint
         return true;                                        // not an error
 
     uint32 newGuid = registerNewGuid(oldGuid, guidMap, hiGuid);
-    snprintf(chritem, 20, "%d", newGuid);
+    snprintf(chritem, 20, "%u", newGuid);
 
     return changenth(str, n, chritem, false, nonzero);
 }
@@ -189,7 +189,7 @@ bool changetokGuid(std::string &str, int n, std::map<uint32, uint32> &guidMap, u
         return true;                                        // not an error
 
     uint32 newGuid = registerNewGuid(oldGuid, guidMap, hiGuid);
-    snprintf(chritem, 20, "%d", newGuid);
+    snprintf(chritem, 20, "%u", newGuid);
 
     return changetoknth(str, n, chritem, false, nonzero);
 }
@@ -421,9 +421,9 @@ DumpReturn PlayerDumpReader::LoadDump(const std::string& file, uint32 account, s
 
     // name encoded or empty
 
-    snprintf(newguid, 20, "%d", guid);
-    snprintf(chraccount, 20, "%d", account);
-    snprintf(newpetid, 20, "%d", sObjectMgr->GeneratePetNumber());
+    snprintf(newguid, 20, "%u", guid);
+    snprintf(chraccount, 20, "%u", account);
+    snprintf(newpetid, 20, "%u", sObjectMgr->GeneratePetNumber());
     snprintf(lastpetid, 20, "%s", "");
 
     std::map<uint32, uint32> items;

src/server/game/World/World.cpp

@@ -1754,7 +1754,7 @@ void World::DetectDBCLang()
     uint8 default_locale = TOTAL_LOCALES;
     for (uint8 i = default_locale-1; i < TOTAL_LOCALES; --i)  // -1 will be 255 due to uint8
     {
-        if (strlen(race->name[i]) > 0)                     // check by race names
+        if (race->name[i][0] != '\0')                     // check by race names
         {
             default_locale = i;
             m_availableDbcLocaleMask |= (1 << i);