订单类型非PayPal时，返回空

AdminController/ServeManagementController.py

@@ -688,6 +688,8 @@ class serveManagement(View):
                 #  添加PayPal交易号字段
                 if data['payType'] == 1:
                     data['trade_no'] = order['trade_no']
+                else:
+                    data['trade_no'] = ''
                 order_list.append(data)
             return response.json(
                 0, {'list': order_list, 'total': count})