MUC should respond to IQ queries

Description

When the conference service is sent an IQ ping (or anything, really), it swallows the request, and does not reply. The XMPP spec defines that every IQ request must be responded to. If all else fails, respond with an error-type reply.

Environment

None
Fixed
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Assignee

Guus der Kinderen

Reporter

Guus der Kinderen