[issue26620] Fix ResourceWarning warnings in test_urllib2_localnet

[Martin Panter]

Martin Panter added the comment:

This handling of KeyboardInterrupt seems like a bug with unittest IMO. But personally I don’t spend too much thought or code handling KeyboardInterrupt in tests, for similar reasons to not doing special handling of test failures in Issue 26612.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue26620>
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