Click in right audio channel on simple media restart.

Click in right audio channel on simple media restart.
Reproduced on some streams
[test_stream.zip](https://github.com/google/ExoPlayer/files/8031742/test_stream.zip)

I use this code.

Remember url on start to restart later the same url with bit other paramenters

> private MediaSource createMediaSource(String url, long startOffsetMs) {
> Uri videoURI = Uri.parse(url);
> Uri.Builder videoUriBuilder = videoURI.buildUpon();
> videoURI = videoUriBuilder.build();
> Log.i(TAG, "create media source for url:" + videoURI);
> MediaItem mediaItem = new MediaItem.Builder().setUri(videoURI).build();
> return mMediaSourceFactory.createMediaSource(mediaItem);
> }
>
> private void seekTest(int keyCode)
> {
> MediaSource mediaSource = createMediaSource(mUrl, 0);
> player.setMediaSource(mediaSource, true);
> player.prepare();
> }
>

- ExoPlayer version number: 2.16.1
- Android version: 7
- Android device: H96 Pro 4K

Also reproduced on other device with android 7