[issue35940] multiprocessing manager tests fail in the Refleaks buildbots

[Pablo Galindo Salgado]

Change by Pablo Galindo Salgado <pablogsal at gmail.com>:


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keywords: +patch, patch, patch
pull_requests: +11812, 11813, 11814
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue35940>
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