From dd308f6be19fea16bf6009f5d9d60942ff7e9523 Mon Sep 17 00:00:00 2001
From: chrox <chrox.huang@gmail.com>
Date: Thu, 6 Nov 2014 14:00:47 +0800
Subject: [PATCH] allow closing non-existent widget but throw a warning

---
 frontend/ui/uimanager.lua | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/frontend/ui/uimanager.lua b/frontend/ui/uimanager.lua
index 2656d9f66..a3730fc7c 100644
--- a/frontend/ui/uimanager.lua
+++ b/frontend/ui/uimanager.lua
@@ -153,6 +153,10 @@ end
 
 -- unregister a widget
 function UIManager:close(widget)
+    if not widget then
+        DEBUG("widget not exist to be closed")
+        return
+    end
     DEBUG("close widget", widget.id)
     Input.disable_double_tap = DGESDETECT_DISABLE_DOUBLE_TAP
     local dirty = false