修bug

routes/orders.js

@@ -1373,9 +1373,9 @@ router.post('/confirm-payment', auth, async (req, res) => {
     });
 
     await connection.execute(
-      `UPDATE orders SET status = 'pending', address = ?, updated_at = NOW() 
+      `UPDATE orders SET status = 'pending', address = ?, updated_at = NOW(), coupon_record_id = ?
        WHERE id = ?`,
-      [addressStr, order_id]
+      [addressStr, couponRecordId === undefined ? null : couponRecordId, order_id]  
     );
 
     // 减组合库存