fix：兼容历史订单无商品类型，显示/

src/pages/order/list/list.js

@@ -735,7 +735,7 @@ export default class orderlist extends React.Component {
                         ? "直充"
                         : rowData.product_type == 2
                         ? "卡密"
-                        : "立减金"}
+                        : rowData.product_type ==3?"立减金":'/'}
                     </span>
                   )
                 }