pcm: multi: return correct hwptr and avail from snd_pcm_multi_status()

alsa-project/alsa-lib pull request #224 was opened from infmagic2047:

Ensure the logic of snd_pcm_multi_status() is consistent with snd_pcm_multi_avail_update().

Signed-off-by: Yutao Yuan infmagic2047reg@outlook.com

Request URL : https://github.com/alsa-project/alsa-lib/pull/224 Patch URL : https://github.com/alsa-project/alsa-lib/pull/224.patch Repository URL: https://github.com/alsa-project/alsa-lib