Really remove the droppings when there are no pages

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33385 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/notebook.cpp

@@ -772,7 +772,7 @@ void wxNotebook::OnSize(wxSizeEvent& event)
     {
         // Prevents droppings on resize, but does cause some flicker
         // when there are no pages.
-        Refresh(false);
+        Refresh();
         event.Skip();
         return;
     }