Possible undefined variable in comment.module?

I'm new to drupal so if this is spurious, please be nice:

In version 1.302.2.9 of the comment.module file, in the comment_menu hook/callback, for the statement starting at line 112 (containing 'path' => 'admin/comment/list/approval'), it looks like if caching is turned off ($may_cache is false), then the $access variable will be undefined.

Maybe this is intentional, but I thought I'd ask.

Here's the code snippet:

function comment_menu($may_cache) {
  $items = array();

  if ($may_cache) {
    $access = user_access('administer comments');
    $items[] = array('path' => 'admin/comment', 'title' => t('comments'),
      'callback' => 'comment_admin_overview', 'access' => $access);
    $items[] = array('path' => 'admin/comment/edit', 'title' => t('edit comment'),
      'callback' => 'comment_admin_edit', 'access' => $access, 'type' => MENU_CALLBACK);
    $items[] = array('path' => 'admin/comment/delete', 'title' => t('delete comment'),
      'callback' => 'comment_delete', 'access' => $access, 'type' => MENU_CALLBACK);

    // Tabs:
    $items[] = array('path' => 'admin/comment/list', 'title' => t('list'),
      'type' => MENU_DEFAULT_LOCAL_TASK, 'weight' => -10);
    $items[] = array('path' => 'admin/comment/configure', 'title' => t('configure'),
      'callback' => 'comment_configure', 'access' => $access, 'type' => MENU_LOCAL_TASK);
    if (module_exist('search')) {
      $items[] = array('path' => 'admin/comment/search', 'title' => t('search'),
        'callback' => 'comment_search', 'access' => $access, 'type' => MENU_LOCAL_TASK);
    }

    // Subtabs:
    $items[] = array('path' => 'admin/comment/list/new', 'title' => t('new comments'),
      'type' => MENU_DEFAULT_LOCAL_TASK, 'weight' => -10);
    $items[] = array('path' => 'admin/comment/list/approval', 'title' => t('approval queue'),
      'callback' => 'comment_admin_overview', 'access' => $access,
      'callback arguments' => 'approval',
      'type' => MENU_LOCAL_TASK);

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