as_tweaks_form_alter() parameter 3 expected to a reference, value given

So, in line 31 of as_tweaks.module file, you have

function as_tweaks_form_alter(&$form, &$form_state, &$form_id) {

as per http://api.drupal.org/api/function/hook_form_alter/6 the 3rd parameter doesn't need a &

I removed the & from &$form_id to make line 31:

function as_tweaks_form_alter(&$form, &$form_state, &$form_id) {

and now I no longer get the warnings.