set m_isBeingDeleted to true (only) in SendDestroyEvent(); call it as early as possible during the window destruction to ensure that destroy event handlers can still access the full window object

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58246 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/os2/window.cpp

@@ -334,7 +334,7 @@ void wxWindowOS2::Init()
 //
 wxWindowOS2::~wxWindowOS2()
 {
-    m_isBeingDeleted = true;
+    SendDestroyEvent();
 
     for (wxWindow* pWin = GetParent(); pWin; pWin = pWin->GetParent())
     {