Code review comment for lp://staging/~a1s/brz/3.2-windows-local-paths

> > Please add a test in breezy/tests/test_location.py as well?
>
> The test for this is test_location.TestLocationToUrl.test_path, as said in
> https://bugs.launchpad.net/brz/+bug/1951112
>
> The test is failing without this fix, and passing with it.
It doesn't fail on Linux without this change, and adding a test will help prevent this regressing.