From a63fd77a50d5623961202988e0369d3ec9510ece Mon Sep 17 00:00:00 2001
From: Paddy Xu <xupaddy@gmail.com>
Date: Fri, 26 Jan 2018 15:40:00 +0200
Subject: [PATCH] shutdown old thread

---
 QuickLook/ViewerWindow.Actions.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/QuickLook/ViewerWindow.Actions.cs b/QuickLook/ViewerWindow.Actions.cs
index 7d27303..a7c446e 100644
--- a/QuickLook/ViewerWindow.Actions.cs
+++ b/QuickLook/ViewerWindow.Actions.cs
@@ -273,6 +273,7 @@ namespace QuickLook
             //Dispatcher.BeginInvoke(new Action(Hide), DispatcherPriority.ApplicationIdle);
 
             ViewWindowManager.GetInstance().ForgetCurrentWindow();
+            BeginClose();
 
             ProcessHelper.PerformAggressiveGC();
         }
@@ -280,6 +281,7 @@ namespace QuickLook
         internal void BeginClose()
         {
             UnloadPlugin();
+            busyDecorator.Dispose();
 
             Close();