Cannot add rating to a review created without a rating

Repro steps:

Create a review for a node, but don't give it a rating. Save it.

Go to the review and click 'Edit'. (You are either admin or have fixed the bug that stops you from editing your own reviews)

Select a rating. Save it.

Expected: Your review has a rating.

What actually happens: Your review still has not ratings. The rating for the node however displays 1 rating. Repeating the process doesn't add a rating to the review, but increases the number of ratings for the node.

What is happening: Since the first review was created without a rating the first time round, there was no entry in table {simple_review}. Subsequent updates to the rating don't insert an entry into {simple_review}, because it's assumed there is already one.

Solution:

in "function simple_review_comment" replace

<?php

        if ($op == 'insert' && $vote) {
          db_query("INSERT INTO {simple_review} (vid, cid) VALUES (%d, %d)", $vote->vote_id, $comment['cid']);
        }
        else if (!$vote) {
          simple_review_delete_vote($comment['cid']);
        }

?>

with

<?php

       if ($vote) {
          if($op == 'update') {
            db_query("DELETE FROM {simple_review} WHERE cid = %d",  $comment['cid']);
          }
          db_query("INSERT INTO {simple_review} (vid, cid) VALUES (%d, %d)", $vote->vote_id, $comment['cid']);
        } 
        else {
          simple_review_delete_vote($comment['cid']);
        }
?>

Apologies for this not being a real patch. (I'm still a newbie)