#182799 by Moshe Weitzman: form_state['values']['form_build_id'] should not be...

#182799 by Moshe Weitzman: form_state['values']['form_build_id'] should not be saved as a system setting when a setting form is submitted

modules/system/system.module

@@ -876,7 +876,7 @@ function system_settings_form_submit($form, &$form_state) {
   $op = isset($form_state['values']['op']) ? $form_state['values']['op'] : '';
 
   // Exclude unnecessary elements.
-  unset($form_state['values']['submit'], $form_state['values']['reset'], $form_state['values']['form_id'], $form_state['values']['op'], $form_state['values']['form_token']);
+  unset($form_state['values']['submit'], $form_state['values']['reset'], $form_state['values']['form_id'], $form_state['values']['op'], $form_state['values']['form_token'], $form_state['values']['form_build_id']);
 
   foreach ($form_state['values'] as $key => $value) {
     if ($op == t('Reset to defaults')) {