From c8e56fa2cfc8ce8553495b3c33a7890fd82862f8 Mon Sep 17 00:00:00 2001
From: Mariano Reingart <reingart@gmail.com>
Date: Mon, 19 Jan 2015 03:02:23 +0000
Subject: [PATCH] Fix crash from possible NULL pointer in wxQT list ctrl

Thanks @seandepagnier


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78386 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/qt/listctrl.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/qt/listctrl.cpp b/src/qt/listctrl.cpp
index 9c3ccbc2eb..4b52c54f76 100644
--- a/src/qt/listctrl.cpp
+++ b/src/qt/listctrl.cpp
@@ -783,12 +783,14 @@ long wxListCtrl::HitTest(const wxPoint& point, int &flags, long* ptrSubItem) con
     if ( index.isValid() )
     {
         flags = wxLIST_HITTEST_ONITEM;
-        *ptrSubItem = index.column();
+        if (ptrSubItem)
+            *ptrSubItem = index.column();
     }
     else
     {
         flags = wxLIST_HITTEST_NOWHERE;
-        *ptrSubItem = 0;
+        if (ptrSubItem)
+            *ptrSubItem = 0;
     }
     return index.row();
 }