mod_sasl2_fast: Improve handling when SASL profile unexpectedly lacks CB
This fixes a traceback reported by riau, but likely does not solve the
underlying cause, whatever that is.
-- Compatibility with clients that set 'to' on resource bind requests
--
-- http://xmpp.org/rfcs/rfc3920.html#bind
-- http://xmpp.org/rfcs/rfc6120.html#bind-servergen-success
local st = require "util.stanza";
module:hook("iq/host/urn:ietf:params:xml:ns:xmpp-bind:bind", function(event)
local fixed_stanza = st.clone(event.stanza);
fixed_stanza.attr.to = nil;
prosody.core_process_stanza(event.origin, fixed_stanza);
return true;
end);