[issue34492] Python/coreconfig.c: Fix _Py_wstrlist_copy()

[Alexey Izbyshev]

Change by Alexey Izbyshev <izbyshev at ispras.ru>:


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title: Python/coreconfig.c: Missing NULL check in _Py_wstrlist_copy() -> Python/coreconfig.c: Fix _Py_wstrlist_copy()

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34492>
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