+ while (sessions_to_kill->first_pref != NULL) {
+ struct wcpref *ptr;
+ ptr = sessions_to_kill->first_pref->next;
+ free(sessions_to_kill->first_pref->pref_key);
+ free(sessions_to_kill->first_pref->pref_value);
+ free(sessions_to_kill->first_pref);
+ sessions_to_kill->first_pref = ptr;