Bug 1733109 - passing result of std::move() as a const reference argument; no move will actually happen in MediaDecoder.cpp. r=bryce

Depends on D126930

Differential Revision: https://phabricator.services.mozilla.com/D126931

dom/media/MediaDecoder.cpp

@@ -1098,7 +1098,7 @@ void MediaDecoder::SetSecondaryVideoContainer(
   if (mSecondaryVideoContainer.Ref() == aSecondaryVideoContainer) {
     return;
   }
-  mSecondaryVideoContainer = std::move(aSecondaryVideoContainer);
+  mSecondaryVideoContainer = aSecondaryVideoContainer;
   UpdateVideoDecodeMode();
 }