Undefined values for anonymous users

At line 1091
theme('webform_view_messages', $node, $teaser, $page, $submission_count, $limit_exceeded, $allowed_roles);
$submission_count is not defined for anon. users.

Triggers a php notice for me

At line 2013
$replace = array($user->name, $user->mail, variable_get('site_name', 'drupal'), format_date(time(), 'large'));
$user->name and $user->mail are not defined for not logged-in users.

It only spawns a php notice: undefined property for stdClass for me.

Clearly this is only a minor issue if at all. I'm using CVS DRUPAL 6.6-dev.

Thanks