Add own function to send AI_Reaction packet. by NoFantasy

--HG--
branch : trunk

src/game/Unit.cpp

@@ -8616,11 +8616,7 @@ bool Unit::Attack(Unit *victim, bool meleeAttack)
             victim->SetInCombatWith(this);
         AddThreat(victim, 0.0f);
 
-        WorldPacket data(SMSG_AI_REACTION, 12);
-        data << uint64(GetGUID());
-        data << uint32(AI_REACTION_AGGRO);                  // Aggro sound
-        ((WorldObject*)this)->SendMessageToSet(&data, true);
-
+        ((Creature*)this)->SendAIReaction(AI_REACTION_AGGRO);
         ((Creature*)this)->CallAssistance();
     }