Possible memory leak in rlm_sql?

I noticed something in rlm_sql.c function rlm_sql_process_groups(). group_list is allocated at the top of the function, but sql_grouplist_free(&group_list) is only called at the end. All the various error exits don't call it. ISTM that's going to leak memory in event of errors, but perhaps I have overlooked something which prevents that. Regards, Brian.