Core/: Fix warnings

--HG--
branch : trunk

src/server/game/Chat/Chat.cpp

@@ -1689,7 +1689,7 @@ valid examples:
                             bool foundName = false;
                             for (uint8 dbIndex = LOCALE_koKR; dbIndex < MAX_LOCALE; ++dbIndex)
                             {
-                                if (dbIndex == -1 || il == NULL || uint8(dbIndex) >= il->Name.size())
+                                if (il == NULL || dbIndex >= il->Name.size())
                                     // using strange database/client combinations can lead to this case
                                     expectedName = linkedItem->Name1;
                                 else

src/server/game/Chat/Commands/Level3.cpp

@@ -6904,10 +6904,10 @@ bool ChatHandler::HandleInstanceUnbindCommand(const char *args)
     if (pDiff)
         diff = atoi(pDiff);
     uint16 counter = 0;
-    int16 MapId = 0;
+    uint16 MapId = 0;
 
     if (strcmp(pMap, "all"))
-        if (!(MapId = atoi(pMap)))
+        if (!(MapId = uint16(atoi(pMap))))
             return false;
 
     for(uint8 i = 0; i < MAX_DIFFICULTY; ++i)