update time in node update (time changed)

In
function xmlsitemap_node_xmlsitemap_links()

there is no update of link if time is changed
@line 314:
$old_row = db_fetch_object(db_query("SELECT lid, type, language, priority,changed FROM {xmlsitemap} WHERE loc = '%s'", $row->loc));
#(fetch changed from old row)
@line 320:
elseif ($old_row->type == 'node' && ($old_row->priority != $row->priority || $old_row->language != $row->language || $old_row->changed!=$row->changed )) {
$row->lid = $old_row->lid;
drupal_write_record('xmlsitemap', $row, 'lid');

update record if time is changed!

I attach the diff