Fix for pets moving from stay during combat

Closes #5612

src/server/game/AI/CoreAI/PetAI.cpp

@@ -457,7 +457,7 @@ bool PetAI::CanAttack(Unit* target)
 
     // Stay - can attack if target is within range or commanded to
     if (me->GetCharmInfo()->HasCommandState(COMMAND_STAY))
-        return (me->IsWithinMeleeRange(target, MIN_MELEE_REACH) || me->GetCharmInfo()->IsCommandAttack());
+        return (me->IsWithinMeleeRange(target, MELEE_RANGE) || me->GetCharmInfo()->IsCommandAttack());
 
     // Follow
     if (me->GetCharmInfo()->HasCommandState(COMMAND_FOLLOW))