Function db_next_id() isn't available in Drupal 6

Function db_next_id() isn't available in Drupal 6 ... it is available for D5 and D7 but unfortunately not for D6...

I just installed your module (very useful IMO, I think this should go to UC core!) and found this by code review. It doesn't cause to me some error until now. I suggest to use db_last_insert_id() instead.

/*
 * Sets the automatically generated SKU for the node
 */
function uc_product_power_tools_sku_set($pattern, &$node) {
  if (trim($pattern)) {
  // ... some code ...
  // around line 220
  else {
    $temp = db_next_id('{node}_nid');
    $node->model = t('@type', array('@type' => $node->type, '@node-id' => $temp));
  }
 // ... etc ...
}