优化

@@ -245,6 +245,7 @@ class MailListV2 extends Base {
             return $v;
         },$lists?:[]);
 
+        if($lists){
             // 总数
             if(empty($where['flagged'])){
                 $total  = db()->cache($this->cache)->count(sprintf($sql,"count(*)"));
@@ -252,6 +253,10 @@ class MailListV2 extends Base {
                 $total  = db()->cache($this->cache)->count("select count(*) from (".sprintf($sql,"`id`").' group by `udate`) as t');
             }
 
+        }else{
+            $total = 0;
+        }
+
 
         app()->_json(listsPage($lists,$total,$page,$limit));