[issue33720] test_marshal: crash in Python 3.7b5 on Windows 10

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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keywords: +patch
pull_requests: +6967
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33720>
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