修复银联支付不能成功的bug

Code Review By Rock Zhang

@@ -54,7 +54,7 @@ class Service extends PayAbstract
         if ($verify) {
             //更改订单状态
             $responseData->orderCode = $package['orderId'];
-            $responseData->payResult = 0;
+            $responseData->payResult = 200;
             $responseData->payTime = time();
             $responseData->totalFee = $package['txnAmt'] * 0.01;
             $responseData->bankName = '';