Applied patch [ 774886 ] wxnotebook bug

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@22240 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/notebook.cpp

@@ -386,6 +386,7 @@ wxNotebookPage *wxNotebook::DoRemovePage(int nPage)
             // for some unknown reason if the tab control shows the up-down
             // control (i.e. when there are too many pages) -- otherwise after
             // deleting a page nothing at all is shown
+            if (m_nSelection >= 0)
                 m_pages[m_nSelection]->Refresh();
         }