index_channel中返回的$list增加array_values

app/Http/Controllers/Api/CategoryController.php

@@ -42,6 +42,6 @@ class CategoryController extends Controller
 				$parent_pid = $list[$parent_pid]['pid'];
 			}
 		}
-		return $this->success($list);
+		return $this->success(array_values($list));
 	}
 }