mod: 控制器监听事件移除

lib/pages/fan/view.dart

@@ -37,6 +37,12 @@ class _FansPageState extends State<FansPage> {
     );
   }
 
+  @override
+  void dispose() {
+    scrollController.removeListener(() {});
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(