mod_invites_register: Fix missing 'from' attribute (thanks Martin) This should probably cause a noisier error in Prosody, than the current > No hosts[from_host] (please report): <stanza> A stack trace would have been useful, for example.

module:hook("message/host", function (event)
	local stanza = event.stanza;
	if #stanza.tags == 1 and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/chatstates" then
		return true;
	end
end, -10);