[issue39824] Multi-phase extension module (PEP 489): don't call m_traverse, m_clear nor m_free before the module state is allocated

[hai shi]

Change by hai shi <shihai1991 at 126.com>:


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pull_requests: +18432
pull_request: https://github.com/python/cpython/pull/19076

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<https://bugs.python.org/issue39824>
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