Blender Git Loki

Fix `bpy.types.Operator.bl_rna.foobar` not working since rBfe094eaf20.

When path to resolve "finishes" on a collection prop, do not erase the returned prop!

This caused py's path_resolve to return same PointerRNA as the one passed as parameter, leading to
inifinte recursion in Operator's accessor func (__getattribute__)...