Nostalrius Begins - Quality wow vanilla realm (1.12)

I have the key and everything in my quest log it says (Complete) but when i go to turn it in the guy doesnt even have a yellow question mark over his head and theres no way to turn it in

who cares devour magic doesn't work

this quest should be turn in to "Gol'Dir" himself,just he's get killed by a stealth mob everytime he respawn,it's shouldn't be like this.