[issue45878] Use `self.assertRaises` instead of `try/except` in `ctypes/test_functions.py::test_mro`

[Serhiy Storchaka]

Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:


New changeset 11909c12c75a7f377460561abc97707a4006fc07 by Serhiy Storchaka in branch '3.10':
[3.10] Remove a NEWS entry for bpo-45878 (GH-30258)
https://github.com/python/cpython/commit/11909c12c75a7f377460561abc97707a4006fc07


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<https://bugs.python.org/issue45878>
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