fix service worker cross-origin problem in multibuffers

media/blink/multibuffer_data_source.cc

Index: media/blink/multibuffer_data_source.cc
diff --git a/media/blink/multibuffer_data_source.cc b/media/blink/multibuffer_data_source.cc
index 065095d1a42934d05e831ad3debd71995f1558a2..8026f62e76dc4477a0231b08703b3f277f385c3e 100644
--- a/media/blink/multibuffer_data_source.cc
+++ b/media/blink/multibuffer_data_source.cc
@@ -190,12 +190,10 @@ void MultibufferDataSource::OnRedirect(
           FROM_HERE,
           base::Bind(&MultibufferDataSource::StartCallback, weak_ptr_));
     } else {
-      {
-        base::AutoLock auto_lock(lock_);
-        StopInternal_Locked();
-      }
-      StopLoader();
+      base::AutoLock auto_lock(lock_);
+      StopInternal_Locked();
     }
+    StopLoader();
     return;
   }
   if (url_data_->url().GetOrigin() != destination->url().GetOrigin()) {