[issue25750] tp_descr_get(self, obj, type) is called without owning a reference to "self"

[Roundup Robot]

Change by Roundup Robot <devnull at psf.upfronthosting.co.za>:


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pull_requests: +5881

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue25750>
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