Small code fixes in API code

pub/api/classes/API_office_stompjes.php

@@ -3,11 +3,13 @@
 namespace api\classes;
 
 use api\classes\API;
+use JetBrains\PhpStorm\NoReturn;
 
 require_once 'API.php';
 
 class API_office_stompjes extends API
 {
+    #[NoReturn]
     public function addStomp()
     {
         $query = "INSERT INTO office_stompjes (stomp_uuid, user_uuid, stomp_timestamp) VALUES (UUID(), ?, ?)";
@@ -19,6 +21,7 @@ class API_office_stompjes extends API
         $this->apiOutput(200, ['success' => 'Stomp added.']);
     }
 
+    #[NoReturn]
     public function deleteStomp()
     {
         $query = "DELETE FROM office_stompjes WHERE stomp_uuid = ?";