[issue11767] Maildir iterator leaks file descriptors by default

[Filip Gruszczyński]

Filip Gruszczyński <gruszczy at gmail.com> added the comment:

I am sorry. This is the first time I see contextlib and haven't understood, that I should use a function from it. Here is a version with mock object having close method and __getitem__ using contextlib.closing.

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Added file: http://bugs.python.org/file21572/11767_3.patch

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