gencache fix: compare against keys rather than values in ForgetAboutTypelibInterface
#2329
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Spotted by pyright's
reportUnnecessaryComparison
If
versionRedirectMap
's keys are tuples, and values are Modules, this comparison made no sense and "drop any version redirects to it" was never done. If I'm correct, this probably fixes some gencache / typelib issue, but I have no idea which (there's a handful open), or will cause issues if this behaviour not working was fine for 21 years.Writing a unit test for the intended behaviour might be warranted. @mhammond please advise.