[issue23860] Windows: Failure to check return value from lseek() in Modules/mmapmodule.c

[Serhiy Storchaka]

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


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versions: +Python 3.10 -Python 3.8

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue23860>
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