fix: skip listener

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

lib/pages/video/detail/controller.dart

@@ -634,6 +634,7 @@ class VideoDetailController extends GetxController
       );
 
   Future _querySponsorBlock() async {
+    positionSubscription?.cancel();
     dynamic result = await Request().get(
       '${GStorage.blockServer}/api/skipSegments',
       queryParameters: {