[issue36813] QueueListener not calling task_done upon termination

[SilentGhost]

Change by SilentGhost <ghost.adh at runbox.com>:


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nosy: +rhettinger
stage:  -> needs patch
versions:  -Python 3.6, Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue36813>
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