[docs] [issue16404] Uses of PyLong_FromLong that don't check for errors

[Serhiy Storchaka]

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


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assignee: docs at python -> serhiy.storchaka

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16404>
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