Bug 1098400: Drop now-unused private member-variable 'mConfig' from FFmpegAudioDecoder, to fix clang build warning. r=edwin

dom/media/fmp4/ffmpeg/FFmpegAudioDecoder.cpp

@@ -22,7 +22,6 @@ FFmpegAudioDecoder<LIBAV_VER>::FFmpegAudioDecoder(
   const mp4_demuxer::AudioDecoderConfig& aConfig)
   : FFmpegDataDecoder(aTaskQueue, GetCodecId(aConfig.mime_type))
   , mCallback(aCallback)
-  , mConfig(aConfig)
 {
   MOZ_COUNT_CTOR(FFmpegAudioDecoder);
   mExtraData.append(aConfig.audio_specific_config.begin(),

dom/media/fmp4/ffmpeg/FFmpegAudioDecoder.h

@@ -35,7 +35,6 @@ private:
   void DecodePacket(mp4_demuxer::MP4Sample* aSample);
 
   MediaDataDecoderCallback* mCallback;
-  const mp4_demuxer::AudioDecoderConfig& mConfig;
 };
 
 } // namespace mozilla