The IRC relay registers a broker wait channel on each pass of its
loop, and when the 100 ms ticker fired instead of a notification it
looped without removing that channel. An idle IRC listener connection
added ten channels a second to the broker, and all but the last stayed
after the connection closed. The ticker case now removes its channel,
as the HTTP long-poll does after its timer.
Broker.ListenerCount returns how many wait channels a user holds, so
the test can check that an idle connection holds at most one, and
none after it closes.
Model: opus-5-5
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