[3.11] Fix undefined behaviour in datetime.time.fromisoformat() (GH-111982)#111991
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…1982) Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value). (cherry picked from commit 21615f7) Co-authored-by: T. Wouters <thomas@python.org>
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Fix undefined behaviour in datetime.time.fromisoformat() when parsing a string without a timezone. 'tzoffset' is not assigned to by parse_isoformat_time if it returns 0, but time_fromisoformat then passes tzoffset to another function, which is undefined behaviour (even if the function in question does not use the value).
(cherry picked from commit 21615f7)
Co-authored-by: T. Wouters thomas@python.org