Make sure we crash if we're trying to call sasl_callback() too many times.
Make sure we crash if we're trying to call sasl_callback() too many times.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot