mod: 优化hive存储占用

lib/pages/main/view.dart

@@ -93,6 +93,12 @@ class _MainAppState extends State<MainApp> with SingleTickerProviderStateMixin {
     }
   }
 
+  @override
+  void dispose() async {
+    await GStrorage.close();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     Box localCache = GStrorage.localCache;