cmd bug

@@ -23,7 +23,8 @@ function start(){
                     break;
                 }
 
-                $lists  =   db()->all(\Model\sendJobsSql::sendList(500-$cNum));
+                $lists  =   db()->all(\Model\sendJobsSql::sendList(500));
+                $lists = $lists?$lists:[];
                 // 循环
                 foreach ($lists as $list){