feat(福利go) 购买成功后主动去请求支付是否成功

pages/welfareMall/order/orderCompletion.js

@@ -162,6 +162,7 @@ Page({
         success: function (res) {
           //支付成功
           console.log(res);
+          WelfareMall.getPayStatus(that.data.orderSn);
           that.selectOrder(that.data.orderSn);
           that.data.repeat = false;
         },