/dev/null doesn't exist on Windows but os.devnull does

[shrewmouse1]

In versioninforeader.py change line 42 from

with open('/dev/null', 'w') as devnull:

with open(os.devnull, 'w') as devnull:

[Roman-Bober]

same with me during pip install:

line 42, in _total_number_of_commits_in_cwd
with open('/dev/null', 'w') as devnull:
FileNotFoundError: [Errno 2] No such file or directory: '/dev/null'