"read more" link disapperas if $teaser != TRUE

Current implementation of node_link() hook checks for $teaser ==1 to display "read more" link:

/**
 * Implementation of hook_link().
 */
function node_link($type, $node = NULL, $teaser = FALSE) {
  $links = array();

  if ($type == 'node') {
    if ($teaser==1 && $node->teaser && !empty($node->readmore)) {
      $links['node_read_more'] = array(
        'title' => t('Read more'),
        'href' => "node/$node->nid",
        // The title attribute gets escaped when the links are processed, so
        // there is no need to escape here.
        'attributes' => array('title' => t('Read the rest of !title.', array('!title' => $node->title)))
      );
    }
  }

  return $links;
}

But i can call node_view() with anything in $teaser for theming purpose. For ex. i can generate different lists of teasers in different places of site. If $teaser contains anything but 1 it still TRUE, so simple patch solves this:

    if ($teaser && $node->teaser && !empty($node->readmore)) {

And we have "read more" on all teasers.