Cannot revert modified widget set

Hi,
trying to revert modified social media widget set does nothing.

Solution:

To fix this, simply edit line 524 of widgets.admin.inc:
function widgets_set_revert_form($form, $form_state, $set) {

...and add the missing & to $form_state:
function widgets_set_revert_form($form, &$form_state, $set) {