Authors file not read in binary mode, causing errors on further lines.

I am using hg-git with Python 3.7.3, on Windows.

I have an authors file referred to by hgrc and got the following error when performing hg push:

  File "C:\Python37x64\lib\site-packages\mercurial\commands.py", line 5778, in push
    opargs=opargs,
  File "D:/dev/OSS/hg-git\hggit\util.py", line 63, in inner
    return f(*args, **kwargs)
  File "D:/dev/OSS/hg-git\hggit\__init__.py", line 585, in exchangepush
    pushop.cgresult = repo.githandler.push(remote.path, revs, force)
  File "C:\Python37x64\lib\site-packages\mercurial\util.py", line 1762, in __get__
    result = self.func(obj)
  File "D:/dev/OSS/hg-git\hggit\hgrepo.py", line 46, in githandler
    return GitHandler(self, self.ui)
  File "D:/dev/OSS/hg-git\hggit\git_handler.py", line 145, in __init__
    self.init_author_file()
  File "D:/dev/OSS/hg-git\hggit\git_handler.py", line 206, in init_author_file
    if not line or line.startswith(b'#'):
TypeError: startswith first arg must be str or a tuple of str, not bytes

I changed:

            with open(self.repo.wvfs.join(authors_path)) as f:

from https://foss.heptapod.net/mercurial/hg-git/-/blob/5de9567da3791c310e6dc5e20231dafe309c51ad/hggit/git_handler.py#L203

to

            with open(self.repo.wvfs.join(authors_path), "rb") as f:

and it worked.