git remote add null pointer

[Christian Ehrhardt ]

$ git ubuntu remote add ahasenack
Traceback (most recent call last):
  File "/snap/git-ubuntu/254/bin/git-ubuntu", line 22, in <module>
    main()
  File "/snap/git-ubuntu/254/gitubuntu/__main__.py", line 228, in main
    sys.exit(args.func(args))
  File "/snap/git-ubuntu/254/gitubuntu/remote.py", line 75, in cli_main
    args.proto,
  File "/snap/git-ubuntu/254/gitubuntu/remote.py", line 181, in main
    return do_add(repo, package, user, url, remote_name, no_fetch)
  File "/snap/git-ubuntu/254/gitubuntu/remote.py", line 99, in do_add
    remote_name=remote_name,
  File "/snap/git-ubuntu/254/gitubuntu/git_repository.py", line 760, in add_remote
    self._add_remote(remote_name, remote_url)
  File "/snap/git-ubuntu/254/gitubuntu/git_repository.py", line 742, in _add_remote
    'refs/heads/*:refs/remotes/%s/*' % remote_name)
  File "/snap/git-ubuntu/254/usr/lib/python3/dist-packages/pygit2/remote.py", line 543, in create
    check_error(err)
  File "/snap/git-ubuntu/254/usr/lib/python3/dist-packages/pygit2/errors.py", line 49, in check_error
    raise ValueError(message)
ValueError: '(null)' is not a valid remote name.

This is on edge.
Andreas gets the same when he adds me, so it seems to be reproducible

[Nish Aravamudan (nacc)]

Fixed in master with 0af2985a3488b0d3c0f6dd6bffdfa3a52b07447a which
has been cherry-picked to snap/{stable, edge}. Sorry, I forgot to do a
bug note in the commit message.