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.
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summary: 'Block remote servers via ad-hoc command'
...
Introduction
============
This module provides the *Edit Blacklist* ad-hoc command described in
[XEP-0133](http://xmpp.org/extensions/xep-0133.html#edit-blacklist) and
also performs the actual blocking of incoming and outgoing
server-to-server connections.
Using
=====
In your client, simply select the Edit Blacklist command from the list
of adhoc commands. E.g. in Pidgin, this is under *Accounts -\> (your
account)* in the menu.