fix orders fixture error

src/orders/components/OrderPayment/OrderPayment.tsx

@@ -159,7 +159,7 @@ const OrderPayment: React.FC<OrderPaymentProps> = props => {
                 )}
               </td>
             </tr>
-            {maybe(() => order && order.discount.amount !== 0) ? (
+            {maybe(() => order && order.discount.amount !== 0) && (
               <tr>
                 <td>
                   <FormattedMessage
@@ -172,7 +172,7 @@ const OrderPayment: React.FC<OrderPaymentProps> = props => {
                   -<Money money={order.discount} />
                 </td>
               </tr>
-            ) : null}
+            )}
             <tr className={classes.totalRow}>
               <td>
                 <FormattedMessage

src/orders/fixtures.ts

@@ -1042,9 +1042,9 @@ export const draftOrder = (placeholder: string): OrderDetails_order => ({
   canFinalize: true,
   created: "2018-09-20T23:23:39.811428+00:00",
   customerNote: "Lorem ipsum dolor sit",
+  discount: null,
   events: [],
   fulfillments: [],
-  discount: null,
   id: "T3JkZXI6MjQ=",
   lines: [
     {