修复微信扫码判定是否支付成功的逻辑

Code Review By Rock Zhang

@@ -88,7 +88,7 @@ class Service extends PayAbstract
 
         $rsp = new Rspparams();
         // 支付成功
-        if(array_key_exists("return_code", $result) && array_key_exists("result_code", $result) && $result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS"){
+        if(isset($result['trade_state']) && $result['trade_state'] === 'SUCCESS'){
             $rsp->payResult = 200;
             $rsp->bankName = "WX";
             $rsp->orderCode = $data['orderCode'];

@@ -430,7 +430,7 @@ class PayModel
             $input->SetOut_trade_no($tradeNo);
             $result = WxPayApi::orderQuery($input);
 
-            if (array_key_exists("return_code", $result) && array_key_exists("result_code", $result) && $result["return_code"] == "SUCCESS" && $result["result_code"] == "SUCCESS") {
+            if (isset($result['trade_state']) && $result['trade_state'] === 'SUCCESS') {
                 $result = array(
                     'code' => '200',
                     'message' => 'success'