alsa-gobject: seq: misc fixes

alsa-project/alsa-gobject pull request #28 was opened from takaswie:

This patchset includes misc fixes for ALSASeq.

Request URL : https://github.com/alsa-project/alsa-gobject/pull/28 Patch URL : https://github.com/alsa-project/alsa-gobject/pull/28.patch Repository URL: https://github.com/alsa-project/alsa-gobject