- hash_unset_mem (config->igmp_group_by_key, group->key);
- clib_mem_free (group->key);
- pool_put (igmp_main.groups, group);
+ hash_unset_mem (config->igmp_group_by_key, (*group)->key);
+ clib_mem_free ((*group)->key);
+ pool_put (igmp_main.groups, *group);
+ *group = 0;