Fix compile without PCH (Also added some minor changes to minimize differences with 4.3.4)

src/server/scripts/Spells/spell_pet.cpp

@@ -1706,7 +1706,7 @@ public:
                 if (pet->isGuardian())
                     ((Guardian*)pet)->SetBonusDamage(owner->GetTotalAttackPowerValue(BASE_ATTACK));
 
-                amount += owner->CalculateDamage(BASE_ATTACK, true, true);;
+                amount += owner->CalculateDamage(BASE_ATTACK, true, true);
             }
         }