Cat_transform: link to create child CCK category incorrect

versions installed : drupal 4.7.3, category 4.7.0, cck 4.7.0

To replicate: create a parent container that can only have children of type category-myccknode, where myccknode is a node you have created. When viewing the parent container page, I see the following links :

add child category - add child container

However, I have already defined that this container can only have children of type category-myccknode

The correct behaviour would be a link "Add child myccknode", linking to /node/add/content-myccknode/parent/$node_id

I'm new to drupal, so forgive me if this is an incorrect bug report. I have found a solution as follows, although I'm not sure if this is the correct way to fix this problem :

$ diff ~/category-4.7.0/category.module  modules/category/category.module
256,260c256,267
<       if (_category_privileged('create categories')) {
<         $links[] = l(t('add child category'), "node/add/category-cat/parent/$node->nid");
<       }
<       if (_category_privileged('create containers')) {
<         $links[] = l(t('add child container'), "node/add/category-cont/parent/$node->nid");
---
>       if ($node->nodes) {
>         foreach ($node->nodes as $node_type) {
>         $node_name = node_get_name($node_type);
>           $links[] = l(t("add child $node_name"), "node/add/$node_type/parent/$node->nid");
>       }
>       } else {
>         if (_category_privileged('create categories')) {
>           $links[] = l(t('add child category'), "node/add/category-cat/parent/$node->nid");
>         }
>         if (_category_privileged('create containers')) {
>           $links[] = l(t('add child container'), "node/add/category-cont/parent/$node->nid");
>         }