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
2015-01-19 03:02:23 +00:00
parent 0476cf3791
commit c8e56fa2cf
1 changed files with 4 additions and 2 deletions
--- 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();
 }