[issue30230] Move quick test in PyObject_IsSubClass outside of PyType_CheckExact guard

[Jim Fasarakis-Hilliard]

Jim Fasarakis-Hilliard added the comment:

Additional question, are tests required to check this behavior? (Also, bumping)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30230>
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