[issue5538] tearDown in unittest should be executed regardless of result in setUp

[Jean-Paul Calderone]

Jean-Paul Calderone <exarkun at divmod.com> added the comment:

/Any/ addCleanup that is successfully executed should cause the cleanup
function to be called.  Otherwise you have to define all your cleanup
twice, and that's no fun.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue5538>
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