commit 8b1f7deec85520d0a5fd0c1dd322516cad981f07
author Henrique Nakashima <hnakashima@chromium.org> Mon Mar 05 18:12:21 2018 +0000
committer Chromium commit bot <commit-bot@chromium.org> Mon Mar 05 18:12:21 2018 +0000
tree f220c728a7825e70db296e03c5c71497edc62407
parent fa1a0f6e4ddb2b30726a6d7403c39ee57295d920

Fix crash when dragging scrollbar in XFA form.

Bug: chromium:809612
Change-Id: I171d836927fc707388444726d3918b2cbbb39002
Reviewed-on: https://pdfium-review.googlesource.com/27890
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Henrique Nakashima <hnakashima@chromium.org>

xfa/fwl/cfwl_scrollbar.cpp

diff --git a/xfa/fwl/cfwl_scrollbar.cpp b/xfa/fwl/cfwl_scrollbar.cpp
index f723124..a65d04e 100644
--- a/xfa/fwl/cfwl_scrollbar.cpp
+++ b/xfa/fwl/cfwl_scrollbar.cpp
@@ -385,7 +385,8 @@
 }
 
 void CFWL_ScrollBar::OnLButtonUp(const CFX_PointF& point) {
-  m_pTimerInfo->StopTimer();
+  if (m_pTimerInfo)
+    m_pTimerInfo->StopTimer();
   m_bMouseDown = false;
   DoMouseUp(0, m_rtMinBtn, m_iMinButtonState, point);
   DoMouseUp(1, m_rtThumb, m_iThumbButtonState, point);