fix for defect #4827

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@54911 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/aui/auibook.cpp

@@ -4374,7 +4374,7 @@ void wxAuiNotebook::OnTabButton(wxCommandEvent& command_evt)
         {
             // if the close button is to the right, use the active
             // page selection to determine which page to close
-            selection = GetSelection();
+            selection = tabs->GetActivePage();
         }
 
         if (selection != -1)