add: mixer = -1;
context: gtk_xine_can_set_volume (GtkXine *gtx){	static int can_set_volume = FALSE;	int caps, mixer;	g_return_val_if_fail (gtx != NULL, 0);	g_return_val_if_fail (GTK_IS_XINE (gtx), 0);	g_return_val_if_fail (gtx->priv->xine != NULL, 0);	if (can_set_volume == TRUE)		return can_set_volume;	caps = xine_get_audio_capabilities (gtx->priv->xine);	if (caps & AO_CAP_PCM_VOL)		mixer = AO_PROP_PCM_VOL;	else if (caps & AO_CAP_MIXER_VOL)		mixer = AO_PROP_MIXER_VOL;	if (caps & (AO_CAP_PCM_VOL | AO_CAP_MIXER_VOL))		can_set_volume = TRUE;	gtx->priv->mixer = mixer;	return can_set_volume;}