Bug 822933 - Properly check if a WebM file has cues. r=kinetik

content/media/webm/WebMReader.cpp

@@ -467,11 +467,7 @@ nsresult WebMReader::ReadMetadata(VideoInfo* aInfo,
 #endif
 
   // We can't seek in buffered regions if we have no cues.
-  bool haveCues;
-  int64_t dummy = -1;
-  haveCues = nestegg_get_cue_point(mContext, 0, -1, &dummy, &dummy,
-                                   (uint64_t*)&dummy) == 0;
-  mDecoder->SetMediaSeekable(haveCues);
+  mDecoder->SetMediaSeekable(nestegg_has_cues(mContext) == 1);
 
   *aInfo = mInfo;