Remove frame on a SetMenuBar(NULL)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@7485 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/frame.cpp

@@ -419,6 +419,9 @@ void wxFrame::SetMenuBar(wxMenuBar *menu_bar)
     if (!menu_bar)
     {
         DetachMenuBar();
+        //actually remove the menu from the frame
+        m_hMenu=NULL;
+        InternalSetMenuBar();
         return;
     }