Typo in $locations links hook_node_view

Since I was unable to display my button into the node links, I have looked into the hook_node_view implementation and saw :

    if (!empty($locations[$view_mode]) && empty($locations['link'])) {
      $node->content['google_plusone'] = array(
        '#markup' => theme('google_plusone_button__' . $node->type, $button_settings),
        '#weight' => variable_get('google_plusone_weight', -10),
      );
    }
    if (!empty($locations[$view_mode]) && !empty($locations['link'])) {
      $node->content['links']['#links']['node_google_plusone_link'] = array(
       'title' => theme('google_plusone_button__' . $node->type, $button_settings),
       'html' => TRUE,
      );
    }

The correct implementation for me, since there is no "link" key in $location, is :

    if (!empty($locations[$view_mode]) && empty($locations['links'])) {
      $node->content['google_plusone'] = array(
        '#markup' => theme('google_plusone_button__' . $node->type, $button_settings),
        '#weight' => variable_get('google_plusone_weight', -10),
      );
    }
    if (!empty($locations[$view_mode]) && !empty($locations['links'])) {
      $node->content['links']['#links']['node_google_plusone_link'] = array(
       'title' => theme('google_plusone_button__' . $node->type, $button_settings),
       'html' => TRUE,
      );
    }

Am I wrong or is it a typo ?

Let me know if I can bring a patch.
Thanks!