[issue39943] Meta: Clean up various issues in C internals

[Andy Lester]

Change by Andy Lester <andy at petdance.com>:


----------
pull_requests: +18573
pull_request: https://github.com/python/cpython/pull/19210

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue39943>
_______________________________________