From f2d74fbc860b7b7459bbe9189e767e0c5c2a4daf Mon Sep 17 00:00:00 2001
From: Jinhao <cnjinhao@hotmail.com>
Date: Fri, 15 May 2020 03:17:43 +0800
Subject: [PATCH] small fix

---
 source/gui/animation.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/source/gui/animation.cpp b/source/gui/animation.cpp
index c57984d1..c118ee51 100644
--- a/source/gui/animation.cpp
+++ b/source/gui/animation.cpp
@@ -677,6 +677,8 @@ namespace nana
 						thr = nullptr;
 				}
 
+				p->thr_variable = nullptr;
+
 				threads_.erase(i);
 				if (thr && thr->thread && thr->thread->joinable())
 					thr->thread->join();