Blender Git Commit Log

Fix T88807: crash when there are multiple links between the same sockets

This commit does two things:

* Disallows creating more than one link from one socket to a multi socket input.
* Properly count links if there happen to be more than one link between the same sockets.

The new link counting should also be more efficient asymptotically.

Differential Revision: https://developer.blender.org/D11570