Fix compilation with wx 2.8

modules/gui/wxwidgets/dialogs.cpp

@@ -376,7 +376,7 @@ void DialogsProvider::OnOpenFileGeneric( wxCommandEvent& event )
     {
         p_file_generic_dialog->SetMessage( wxU(p_arg->psz_title) );
         p_file_generic_dialog->SetWildcard( wxU(p_arg->psz_extensions) );
-        p_file_generic_dialog->SetStyle( (p_arg->b_save ? wxSAVE : wxOPEN) |
+        p_file_generic_dialog->SetWindowStyle( (p_arg->b_save ? wxSAVE : wxOPEN) |
                                          (p_arg->b_multiple ? wxMULTIPLE:0) );
     }