[L2NPC] Origin bug with leaked item

[Master Toma]

If item is deleted using AI DeleteItem(), object is deleted but is left in DB.

How to reproduce:

use c2 client

use //setquest 421 16

then create pet //create_pet 3

select pet and type //setparam level 55

then summon fairy_mymyu

talk to her and select quest

and change dragon to strider

See comments for AI, which leads to leak

[Master Toma]

class hatchling_of_star : pet_use_one_skill {
handler:
    EventHandler SCRIPT_EVENT(script_event_arg1, script_event_arg2, i0) {
        if (script_event_arg1 == 1) {
            if (HaveMemo(myself.master, @adventure_of_the_little_wings) == 1 && GetMemoState(myself.master, @adventure_of_the_little_wings) == 16) {
                Despawn();

                if (DeleteItem1(myself.master, @dragonflute_of_star, 1)) {
                    if (GetCurrentTick() - myself.master.quest_last_reward_time > 1) {
                        myself.master.quest_last_reward_time = GetCurrentTick();
                        CreatePet(myself.master, @dragon_bugle_star, @star_strider);
                        RemoveMemo(myself.master, @adventure_of_the_little_wings);
                        SoundEffect(myself.master, "ItemSound.quest_finish");
                        return;
                    }
                }
            }
        }

        super;
    }
}