Add missing use statement

See 40bed660f5daa1addf76ff41975fcead1f14073f

diff --git a/wcfsetup/install/files/lib/action/TAJAXException.class.php b/wcfsetup/install/files/lib/action/TAJAXException.class.php
index df3498138ffd5d459bfd56a34fffeb11120add7c..adf836fa0a99f9ac78bd645513aca3082da40969 100644 (file)
--- a/wcfsetup/install/files/lib/action/TAJAXException.class.php
+++ b/wcfsetup/install/files/lib/action/TAJAXException.class.php
@@ -7,10 +7,11 @@ use wcf\system\exception\NamedUserException;
 use wcf\system\exception\PermissionDeniedException;
 use wcf\system\exception\UserInputException;
 use wcf\system\exception\ValidateActionException;
+use wcf\system\WCF;
 
 /**
  * Default implementation for the AJAXException throw method. 
- *
+ * 
  * @author     Alexander Ebert, Joshua Ruesweg
  * @copyright  2001-2019 WoltLab GmbH
  * @license    GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>