[FIXED] [Priest][Discipline/Shadow] Shadowfiend/Mindbender despawns if target dead

[Elvenking]

WoW Freakz spell link: https://www.wow-freakz.com/spells.php?spell=34433&&name=shadowfiend
https://www.wow-freakz.com/spells.php?spell=123040&&name=mindbender

Bug description: Shadowfiend and Mindbender are despawning if the target dies, which they where summoned on.
The pet should not despawn, it should stay active and look for a new target nearby.
If there is no target it should stay near the priest until the priest attacks a new target.
Shadowfiend and Mindbender have both the same behaviour in this.

Proof freakz bug:

Left picture u can see i summoned shadowfiend with 11 sec duration left.
Right picture is like 1 sec later (first pony has 118k HP and dies with 1 hit) and you see shadowfiend is gone, not attacking the second evil pony.

Proof mindbender same bug in spoiler:

Spoiler:

Proof retail:

Spoiler:

https://youtube.com/watch?v=rcKFKoFyRns&t=623:

It's very hard to find such a situation, but in this video for example at 10:23 he summons mindbender on mightstone breaker.
The breaker then dies at the last second, and you can see that his mindbender moves to the Rockbound Pelter and attacks him once before it's duration ended.

Here a screenshot from that scenario:

I made circles where the pet dmg is shown, the left one is a little hard to see due to heal numbers.

[strel2k10]

Tested and confirmed.

[Quicksand]

Fixed