This seems to be a convenience feature to return the static/default proxy config when that is configured. This is a first stab at the "correct" implementation, passes the test and seems right to me, but might be crap. Found in [PyManager](https://github.com/python/pymanager/blob/fa2de8c8820f0b2521cc4e31f1b77c903be...), which at least fails at a different place with this change. :D -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9686