Crash when no arguments given to on_queries clause

[root@max1 ~]# cat /home/skysql/dbfwfilter_rules.txt

rule testrule deny no_where_clause on_queries

users kolbe@% testuser@% match all rules testrule

[root@max1 ~]# service maxscale restart

Stopping MaxScale:                                         [FAILED]

Starting MaxScale: maxscale (pid 4219) is running...       [  OK  ]

[root@max1 ~]# mysql -h 192.168.30.38 -P4006 -u kolbe -ppass  -e 'select * from test.t1';

ERROR 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 0 "Internal error/check (Not system error)"

[root@max1 ~]# tail -n 20 /usr/local/mariadb-maxscale/log/skygw_err1.log

---     Logging is enabled.

2015-03-30 13:27:30   Error : Unable to get user data from backend database for service [tee test frontend]. Missing server information.

2015-03-30 13:27:30   Error : Unable to load users from 0.0.0.0:4011 for service tee test frontend.

2015-03-30 13:27:30   Error : Failed to start service 'tee test frontend'.

2015-03-30 13:27:30   Error : Failed to start service 'tee test backend'.

2015-03-30 13:27:34   Fatal: MaxScale received fatal signal 11. Attempting backtrace.

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale() [0x503d0c]

2015-03-30 13:27:34     /lib64/libpthread.so.0(+0xf710) [0x7fa064835710]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/modules/libdbfwfilter.so(parse_querytypes+0x4a) [0x7fa04c2bde5b]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/modules/libdbfwfilter.so(parse_rule+0xa8e) [0x7fa04c2bf556]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/modules/libdbfwfilter.so(+0x5918) [0x7fa04c2bf918]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale(filterApply+0x9c) [0x524aab]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale() [0x50f57a]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale(session_alloc+0x32b) [0x50e04f]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/modules/libMySQLClient.so(+0x5174) [0x7fa04d2e6174]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale() [0x515dd5]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale(poll_waitevents+0x634) [0x515694]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale(main+0x1a45) [0x50685c]

2015-03-30 13:27:34     /lib64/libc.so.6(__libc_start_main+0xfd) [0x7fa0630d4d5d]

2015-03-30 13:27:34     /usr/local/mariadb-maxscale/bin/maxscale() [0x502b29]