78032d57e7
When deleting the last key of an F-Curve, the F-Curve itself also gets deleted. This is now done via the same code as deleting F-Curves from the channel list. Before this fix, a deletion function was used that's not capable of deleting from Actions in NLA strips, which is why it crashed. Pull Request: https://projects.blender.org/blender/blender/pulls/145929