rem: if (gtx->priv->stream == NULL) return FALSE;
context: gtk_xine_can_set_volume (GtkXine *gtx){	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 (gtx->priv->stream == NULL)		return FALSE;	if (xine_get_param (gtx->priv->stream, XINE_PARAM_AUDIO_VOLUME) == -1)		return FALSE;	if (xine_get_param (gtx->priv->stream,				XINE_PARAM_AUDIO_CHANNEL_LOGICAL) == -2)		return FALSE;	return xine_get_stream_info (gtx->priv->stream,			XINE_STREAM_INFO_HAS_AUDIO);}