[issue29438] use after free in key sharing dict

[INADA Naoki]

Changes by INADA Naoki <songofacandy at gmail.com>:


Added file: http://bugs.python.org/file46572/29438-sharedkey-useafterfree-py36-2.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29438>
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