Bug 1229742: P1. Only clear EOS flag if we have new data. r=gerald

MozReview-Commit-ID: ttmWsAIPxQ

dom/media/MediaFormatReader.cpp

@@ -794,7 +794,7 @@ MediaFormatReader::UpdateReceivedNewData(TrackType aTrack)
   bool hasLastEnd;
   media::TimeUnit lastEnd = decoder.mTimeRanges.GetEnd(&hasLastEnd);
   if (hasLastEnd) {
-    if (decoder.mLastTimeRangesEnd && decoder.mLastTimeRangesEnd.ref() > lastEnd) {
+    if (decoder.mLastTimeRangesEnd && decoder.mLastTimeRangesEnd.ref() < lastEnd) {
       // New data was added after our previous end, we can clear the EOS flag.
       decoder.mDemuxEOS = false;
     }