修改列表页面错误提示

@@ -39,8 +39,10 @@ class ListController extends WebAction
             'rowNum' => FILTER_VALIDATE_INT,
             'page' => FILTER_VALIDATE_INT), false);
         //字符转码
-        foreach($condition as $key => $val){
-            $condition[$key] = rawurldecode($val);
+        if (!empty($condition)) {
+            foreach ($condition as $key => $val) {
+                $condition[$key] = rawurldecode($val);
+            }
         }
         //性別(频道)
         $gender_cookie = !isset($_COOKIE['_Gender']) ? '3' : ($_COOKIE['_Gender']=='2,3' ? 2 : 1);