[issue18909] Segfaults on win-amd64 due to corrupt pointer to Tkapp_Interp

[Antoine Pitrou]

Changes by Antoine Pitrou <pitrou at free.fr>:


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priority: normal -> high
stage:  -> patch review
versions: +Python 3.4 -Python 3.2

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18909>
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