[issue20645] 3.4 cherry-pick: 1166b3321012 Revert changes of issue #19466 (clear thread state earlier)

[Larry Hastings]

Changes by Larry Hastings <larry at hastings.org>:


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resolution:  -> fixed
status: open -> closed

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20645>
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