opt: ctr

Signed-off-by: bggRGjQaUbCoE <githubaccount56556@proton.me>

lib/pages/history/controller.dart

@@ -205,4 +205,10 @@ class HistoryController extends GetxController {
       },
     );
   }
+
+  @override
+  void onClose() {
+    scrollController.dispose();
+    super.onClose();
+  }
 }