Hide rating score if no ratings, for guest users only

Finally… here it is if someone else needs it…
This will show ratings for guest users only if there is a rating for that post. Use in single.php or your custom single template.

$postid = get_the_ID();
$rating = get_post_meta($postid, 'ratings_score', 'true');
if ( !is_user_logged_in() && empty($rating)) {
	echo '';
} else {
	echo '<div id="rating">'.the_ratings().'</div>';
}