drupal_alter('cas_server_user_attributes', ...) has too many parameters

In Drupal 7, drupal_alter takes a maximum of 2 contextual arguments. In this case, we have passed three (account, ticket, service). Oops.

Instead, I suggest we pass $account and $context = array('ticket' => $ticket, 'service' => $service). We also should quickly backport this fix to 6.x-3.x, since there hasn't been any releases with the current API yet.