[issue18407] Fix compiler warnings in pythoncore for Win64

[STINNER Victor]

STINNER Victor <vstinner at redhat.com> added the comment:


New changeset c48ff73dd60bec5dcbe64bedeff91e6db26d98bc by Victor Stinner in branch 'master':
bpo-18407: win32_urandom() uses PY_DWORD_MAX (GH-10656)
https://github.com/python/cpython/commit/c48ff73dd60bec5dcbe64bedeff91e6db26d98bc


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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue18407>
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