Undefined index: taxonomy_term in similarterms_taxonomy_node_get_terms

I don't know if I'm missing something, but installing similar terms and placing the block in a node displayed with panels doesn't work. I haven't tested if it's related to panels but I don't think it is.

Anyways the problem is this code:

function similarterms_taxonomy_node_get_terms($node, $vid = NULL) {
  $terms = &drupal_static(__FUNCTION__);

  $fields = field_info_fields();
  $story_vocabs = array();
  foreach ($fields as $field_name => $field) {
    if ($field['type'] == 'taxonomy_term_reference' && !empty($field['bundles']['node']) && in_array($node->type, $field['bundles']['node'])) {
      $node_fields = field_get_items('node', $node, $field['field_name']);
      foreach ($node_fields as $item) {
        if (($vid == NULL) || ($item['taxonomy_term']->vid == $vid)) {
            $terms[$node->vid]['tid'][$item['tid']] = $item['taxonomy_term'];
        }
      }
    }
  }

  return $terms[$node->vid]['tid'];
}

The problem is that $item is an array only having the tid key of the term referenced. This is what I expected, so I'm not quite sure where 'taxonomy_term' should be coming from.

A quick fix would be be to add:

foreach ($node_fields as $item) {
        if (!isset($item['taxonomy_term']) && isset($item['tid'])) {
          $item['taxonomy_term'] = taxonomy_term_load($item['tid']);
        }
        ...

This seems to fix the problem for me, but something better should probably be made instead.