Remove some redundant explicit NULL checks for pointers before ´delete´ or ´delete[]´ calls since this check is done implicitly when deleting.

Also fixes a memory leak in .reload creature_template command

--HG--
branch : trunk

src/server/game/Spells/Auras/SpellAuraEffects.cpp

@@ -387,8 +387,7 @@ AuraEffect::AuraEffect(Aura * base, uint8 effIndex, int32 *baseAmount, Unit * ca
 
 AuraEffect::~AuraEffect()
 {
-    if (m_spellmod)
-        delete m_spellmod;
+    delete m_spellmod;
 }
 
 void AuraEffect::GetTargetList(std::list<Unit *> & targetList) const

src/server/game/Spells/Auras/SpellAuras.cpp

@@ -342,8 +342,7 @@ Aura::~Aura()
 {
     // free effects memory
     for (uint8 i = 0 ; i < MAX_SPELL_EFFECTS; ++i)
-        if (m_effects[i])
-            delete m_effects[i];
+         delete m_effects[i];
 
     assert(m_applications.empty());
     _DeleteRemovedApplications();