asyncio: avoid registering done_callback cleanup when there's nothing to cleanup

zeromq / pyzmq

PyZMQ: Python bindings for zeromq

http://zguide.zeromq.org/py:all

BSD 3-Clause "New" or "Revised" License

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Closed minrk closed 6 months ago

minrk commented 6 months ago

avoids closure on Future, which can take a long time to cleanup in starved event loops

closes #1928

minrk commented 6 months ago

wrong button, meant to merge instead of closing