[issue35416] Fix potential resource warnings in distutils

[Éric Araujo]

Éric Araujo <merwok at netwok.org> added the comment:

I think the places that already use try/finally: close are correct.

We try to minimize churn in distutils; changing to with is nice but does not fix errors or warning in these cases.

The changes for the few spots that don’t use finally: close are welcome though!

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35416>
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