code review by hf: fixes bug refs YW-1647

@@ -17,6 +17,10 @@ class LoginController extends AbstractAction
      */
     public function indexAction()
     {
+        // 清除客户端
+        $this->setCookie('_UID', '');
+        $this->setCookie('_TOKEN', '');
+
         $refer = $this->get('refer');
         if (!empty($refer)) {
             $this->setCookie('refer', $refer);
@@ -61,7 +65,6 @@ class LoginController extends AbstractAction
         $data['isPassportPage'] = true; // 模板中模块标识
         $data['areaCode'] = '+86'; // 默认区号
         $data['countrys'] = RegData::getAreasData(); // 地区信息列表
-        
         // 渲染模板
         $this->_view->display('international', $data);
     }