Revert "Revert "1""

This reverts commit 44e45da318d2e7daacb382fa6667253ac0b582f0.

extend/liuniu/WechatService.php

@@ -587,7 +587,7 @@ class WechatService
     {
         $contract_termination_remark = '月捐款解约';
         $order = array_merge(compact('mch_id','contract_code','pan_id','version'), $options);
-        if ($order['detail'] == '') unset($order['detail']);
+//        if ($order['detail'] == '') unset($order['detail']);
 //        $order['notify_url']=Request::instance()->domain() . "/api/wechat/notify/" . $cid;
         $result = self::payment(false, $cid)->contract->delete(
             $order