Faster Node Presave for Node Types Not Using Node Revision Restrict

I noticed in the presave hook that node data and all the revisions were being loaded even if the node type wasn't using this module. I thought it might be beneficial to have the check in place before the query is ran and the node revisions loaded.

The new function would look like this:

/**
 * Implements of hook_presave().
 */
function node_revision_restrict_node_presave($node) {
  $node_type = $node->type;
  $count_to_restrict_set_value = variable_get('restrict_node_revision_number_for_' . $node_type);
  if (isset($count_to_restrict_set_value)) {
    $nid = $node->nid;
    $node_data = db_query('SELECT * FROM {node} WHERE nid = :nid', array(':nid' => $nid));
    foreach ($node_data as $node) {
      $revision_data = node_revision_list($node);
      foreach ($revision_data as $revision) {
        $revision_ids[] = $revision->vid;
      }
    
      $node_to_restrict = array_slice($revision_ids, $count_to_restrict_set_value, count($revision_ids));
      foreach ($node_to_restrict as $revision_id) {
        node_revision_delete($revision_id);
      }
    }  
  }
}