Remove dead code in AudioTrack::processAudioBuffer

        size_t reqSize = audioBuffer.size;

        mCbf(EVENT_MORE_DATA, mUserData, &audioBuffer);

        size_t writtenSize = audioBuffer.size;

        size_t writtenFrames = writtenSize / mFrameSize;

        // Sanity check on returned size

        if (ssize_t(writtenSize) < 0 || writtenSize > reqSize) {