From c7aa6fbfb070443246aaa1fba954779c43f7cef5 Mon Sep 17 00:00:00 2001
From: shun_iwasawa <shun_iwasawa@c.dwango.co.jp>
Date: Jul 05 2016 05:24:07 +0000
Subject: fix brush undo crash


---

diff --git a/toonz/sources/tnztools/toolutils.cpp b/toonz/sources/tnztools/toolutils.cpp
index 2c73a37..666da37 100644
--- a/toonz/sources/tnztools/toolutils.cpp
+++ b/toonz/sources/tnztools/toolutils.cpp
@@ -1067,7 +1067,8 @@ void ToolUtils::UndoPencil::undo() const {
   if (!stroke) return;
   image->deleteStroke(stroke);
   TSelection *selection = app->getCurrentSelection()->getSelection();
-  if (StrokeSelection *strokeSelection = (StrokeSelection *)selection)
+  StrokeSelection *strokeSelection = dynamic_cast<StrokeSelection *>(selection);
+  if (strokeSelection)
     strokeSelection->selectNone();
 
   UINT size = m_fillInformation->size();