[issue38090] test_ctypes is leaking references

[Pablo Galindo Salgado]

New submission from Pablo Galindo Salgado <pablogsal at gmail.com>:

test_ctypes leaked [22, 22, 22] references, sum=66
3 tests failed again:
    test_ctypes test_import test_importlib


https://buildbot.python.org/all/#/builders/1/builds/710

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components: Tests
messages: 351640
nosy: pablogsal
priority: normal
severity: normal
status: open
title: test_ctypes is leaking references
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue38090>
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