links sort by id

i want to sort my links by id instead of by name.
i found that (normaly) the file /wp-includes/links.php would do this. there i can find this:
function get_links_list($order = ‘name’, $hide_if_empty = ‘obsolete’)
i changed the $order = ‘name’ into $order = ‘id’, saved and uploaded.
this hoever, didn’t change anything :S
does anyone have more information about how to sort links by id?
many thanks!