Merge "audioflinger: Remove "exiting=1" parameter"

void AudioFlinger::PlaybackThread::preExit()

{

    ALOGV("  preExit()");

    // FIXME this is using hard-coded strings but in the future, this functionality will be

    //       converted to use audio HAL extensions required to support tunneling

    status_t result = mOutput->stream->setParameters(String8("exiting=1"));

    ALOGE_IF(result != OK, "Error when setting parameters on exit: %d", result);

}

// PlaybackThread::createTrack_l() must be called with AudioFlinger::mLock held