Move top of the file "#pragma once" to after the following comment (swap them). If the comment is a BPL update it to the latest one

server/modules/protocol/MySQL/mariadbclient/setsqlmodeparser.hh

@@ -1,16 +1,16 @@
-#pragma once
 /*
- * Copyright (c) 2016 MariaDB Corporation Ab
+ * Copyright (c) 2018 MariaDB Corporation Ab
  *
  * Use of this software is governed by the Business Source License included
  * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
  *
- * Change Date: 2019-07-01
+ * Change Date: 2022-01-01
  *
  * On the date above, in accordance with the Business Source License, use
  * of this software will be governed by version 2 or later of the General
  * Public License.
  */
+ #pragma once
 
 #include <maxscale/ccdefs.hh>
 #include <maxscale/customparser.hh>