Bug 1541298 - Cycle collect what we can in SpeechRecognition. r=jib

Differential Revision: https://phabricator.services.mozilla.com/D26723

--HG--
extra : moz-landing-system : lando

dom/media/webspeech/recognition/SpeechRecognition.cpp

@@ -104,7 +104,8 @@ already_AddRefed<nsISpeechRecognitionService> GetSpeechRecognitionService(
 }
 
 NS_IMPL_CYCLE_COLLECTION_INHERITED(SpeechRecognition, DOMEventTargetHelper,
-                                   mTrack, mSpeechGrammarList)
+                                   mStream, mTrack, mRecognitionService,
+                                   mSpeechGrammarList)
 
 NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SpeechRecognition)
   NS_INTERFACE_MAP_ENTRY(nsIObserver)