Fatal error after update to Drupal 6.5

Issue Summary

After updating to Drupal 6.5 it is not possible to use the HTTP authentification module. The following PHP Error is shown:

Fatal error: Call to undefined function form_get_errors() in /home/crifi/drupal/modules/user/user.module on line 1349

The reason is a patch in line 1349 of user.module in the Drupal Core:
- if (!empty($form_values['name']) && !empty($form_values['pass']) && $account) {
+ if (!form_get_errors() && !empty($form_values['name']) && !empty($form_values['pass']) && $account) {

The HTTP authentification module uses the function user_authenticate() in line 146 of httpauth.module
Please fix this issue as fast as possible, because of the conflict with patching the security issue SA-2008-060 in Drupal Core!