意见修改

@@ -149,8 +149,9 @@ class IndexController extends WeChatBaseController
         }
         if ($param['media']!="") {
             $data['avatar'] = $this->upload_wx_pic_mul($param['media']);
+        }else{
+            $data['avatar']=$re['avatar'];
         }
-        unset($param['media']);
         $data['create_time']=$param['create_time'];
         $data['content']=$param['content'];
         $data['name']=$param['name'];