Bug 1298217. Part 9 - Assert |mState == DECODER_STATE_DECODING| in MaybeStartBuffering() which is only called in the DECODER_STATE_DECODING case of RunStateMachine(). r=kaku

MozReview-Commit-ID: KLz8CpxDz71

--HG--
extra : rebase_source : 5ceea28dce4772bbd591f6d52b868c42dec7ca70

dom/media/MediaDecoderStateMachine.cpp

@@ -976,9 +976,9 @@ void
 MediaDecoderStateMachine::MaybeStartBuffering()
 {
   MOZ_ASSERT(OnTaskQueue());
+  MOZ_ASSERT(mState == DECODER_STATE_DECODING);
 
-  if (mState == DECODER_STATE_DECODING &&
-      mPlayState == MediaDecoder::PLAY_STATE_PLAYING &&
+  if (mPlayState == MediaDecoder::PLAY_STATE_PLAYING &&
       mResource->IsExpectingMoreData()) {
     bool shouldBuffer;
     if (mReader->UseBufferingHeuristics()) {