Fix off-by-one when iterating dir (tiann#2530)

Fix tiann#2528

Author: 5ec1cff

kernel/throne_tracker.c

@@ -220,7 +220,7 @@ void search_manager(const char *path, int depth, struct list_head *uid_data)
 	data.depth = depth;
 	list_add_tail(&data.list, &data_path_list);
 
-	for (i = depth; i > 0; i--) {
+	for (i = depth; i >= 0; i--) {
 		struct data_path *pos, *n;
 
 		list_for_each_entry_safe(pos, n, &data_path_list, list) {