login: Fixed crash with service_count=1 and when reaching max number of connections from user+ip.
login: Fixed crash with service_count=1 and when reaching max number of connections from user+ip.

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