Fix IFW build break in Mac target

Change-Id: Ibe77dca38f41e8ec9b426ce9239480ef9c66c8d9
Reviewed-by: Kai Koehne <kai.koehne@theqtcompany.com>
Reviewed-by: Iikka Eklund <iikka.eklund@theqtcompany.com>