Hotfix RetargetBasePose being null when it shouldn't

[neptuwunium]

Hotfixes an issue that happens when one of the two is comparing via index and the other via strings (I think? I tried forcing GetHashCode to evaluate the string content and it did not fix it.)

Additive animations (usually faces) and animations using a shared skeleton end up being catastrophically distorted without this change.

Note; if it is an issue with FName comparison in Dictionary<FName, TValue> this issue could emerge in other places

[LongerWarrior]

Is there any specific game with this issue?

[neptuwunium]

Fragpunk character animations.

[4sval]

This is a global issue with FNames as the comparison is most of the time performed via Index/Number rather than Text value.
If 2 FNames are from 2 different name maps the numeric comparison will most likely fail.
It has already been an issue in the past with blueprint decompilation see this

[neptuwunium]

I believe the unreal way is to hash the names and compare that.