修复微信扫码支付

@@ -428,9 +428,9 @@ class PayModel
             $tradeNo = 'YOHOBuy_' . $orderCode;
             $input = new WxPayOrderQuery();
             $input->SetOut_trade_no($tradeNo);
-            $result = WxPayApi::orderQuery($input);
+            $payResult = WxPayApi::orderQuery($input);
 
-            if (isset($result['trade_state']) && $result['trade_state'] === 'SUCCESS') {
+            if (isset($payResult['trade_state']) && $payResult['trade_state'] === 'SUCCESS') {
                 $result = array(
                     'code' => '200',
                     'message' => 'success'