[issue40489] INCREF/DECREFs around the rich comparison needs tests

[Dong-hee Na]

Change by Dong-hee Na <donghee.na92 at gmail.com>:


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keywords: +patch
pull_requests: +19221
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/19906

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40489>
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