51f4e964f7
Previously in 308292b5d7 an error message
was added to notify that some selected objects are not valid for mesh
data transfer, that message didn't take account that src==dst is also a
case where the transfer is skipped, that doesn't mean the object is
invalid. So update the logic for this.
Pull Request: https://projects.blender.org/blender/blender/pulls/140463