From 5eb15407d7fdf6272c8e6ff23e160df980da6db7 Mon Sep 17 00:00:00 2001
From: xia0ta0 <xia0ta0@outlook.com>
Date: Wed, 11 Sep 2013 09:59:09 +0800
Subject: [PATCH]  * fix a warning: treeMenu[0].

---
 module/tree/model.php | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/module/tree/model.php b/module/tree/model.php
index 6ded9af09d..ac02e4d447 100644
--- a/module/tree/model.php
+++ b/module/tree/model.php
@@ -364,8 +364,9 @@ class treeModel extends model
                 $treeMenu[$module->parent] .= "</li>\n";
             }
 
-            $lastMenu = "<ul class='tree'>" . @$treeMenu[0] . "</ul>\n";
-            $menu .= $lastMenu . '</li>';
+            $tree     = isset($treeMenu[0]) ? $treeMenu[0] : '';
+            $lastMenu = "<ul class='tree'>" . $tree . "</ul>\n";
+            $menu    .= $lastMenu . '</li>';
         }
         return $menu;
     }