[BUG] PubChannel not closing zeromq connection

[dwoz]

Description

3006.x

AsyncReqChannels do not have __del__ we should be calling close explicitly (or using a context manager) instead.

salt/salt/channel/client.py

Lines 555 to 567 in 38725e2

	req_channel = AsyncReqChannel.factory(self.opts)
	try:
	yield req_channel.send(load, timeout=60)
	except salt.exceptions.SaltReqTimeoutError:
	log.info(
	"fire_master failed: master could not be contacted. Request timed"
	" out."
	)
	except Exception: # pylint: disable=broad-except
	log.info("fire_master failed", exc_info=True)
	finally:
	# SyncWrapper will call either close() or destroy(), whichever is available
	del req_channel