Original commit message from CVS:
* ext/alsa/gstalsamixer.c: (gst_alsa_mixer_free_list):
* ext/alsa/gstalsamixertrack.c: (gst_alsa_mixer_track_class_init),
(gst_alsa_mixer_track_new):
* ext/alsa/gstalsamixertrack.h:
Fix ancient leftovers... MixerTrack is a GObject.