ZP-1132 Simply return an emty array if koecapabilities are not set.

Released under the Affero GNU General Public License (AGPL) version 3.

src/lib/request/request.php

@@ -759,10 +759,8 @@ class Request {
         if (isset(self::$koeCapabilites)) {
             return self::$koeCapabilites;
         }
-        else {
         return array();
     }
-    }
 
     /**
      * Returns whether it is an Outlook client.