Fixed vhostsubdomain not empty regex check to allow 1 char subdomains.

Till Brehm

2014-02-17 baa7f2736bc91ca3feaed685e8a67a46db4fbb98

 interface/web/mailuser/mail_user_password_edit.php

@@ -52,7 +52,7 @@

   function onSubmit() {

      $this->id = $_SESSION['s']['user']['mailuser_id'];
      $this->id = $app->functions->intval($_SESSION['s']['user']['mailuser_id']);

      parent::onSubmit();