[issue23996] _PyGen_FetchStopIterationValue() crashes on unnormalised exceptions

[Yury Selivanov]

Yury Selivanov added the comment:

> Looks like I forgot about this. My final fix still hasn't been applied, so the code in Py3.4+ is incorrect now.

Left a question in code review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23996>
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