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/gtk/frame.cpp

@@ -56,7 +56,8 @@ bool wxFrame::Create( wxWindow *parent,
 
 wxFrame::~wxFrame()
 {
-    m_isBeingDeleted = true;
+    SendDestroyEvent();
+
     DeleteAllBars();
 }