Fix bogus destroy of a RW lock.

modules/fraud_detection/frd_hashmap.c

@@ -78,7 +78,7 @@ void free_hash_map(hash_map_t* hm, void (*value_destroy_func)(void *))
 		lock_start_write(hm->buckets[i].lock);
 		map_destroy(hm->buckets[i].items, value_destroy_func);
 		lock_stop_write(hm->buckets[i].lock);
-		lock_destroy(hm->buckets[i].lock);
+		lock_destroy_rw(hm->buckets[i].lock);
 	}
 	shm_free(hm->buckets);
 }