Blender Git Loki

Bugfix [#26167] Animating inside group nodes behaves strangely

One node update call (for nodes within group nodetrees) was using the
wrong nodetree (node-editor's nodetree, not the group) which meant
that the wrong RNA context for such nodes would get used, resulting in
errors when trying to keyframe such nodes.

Hopefully this is the last time I have to fix these bugs...