[issue18672] Fix format specifiers for debug output in _sre.c

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


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resolution:  -> fixed
stage: patch review -> committed/rejected
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue18672>
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