[glom/gmenu] gmenu: Adapt to improved Gio::Action API.

[Murray Cumming <murrayc src gnome org>]

commit 9e39a70c8f0b1ff36ab3f8050ecac3e0b81cbf9e
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Aug 9 12:35:35 2013 +0200

    gmenu: Adapt to improved Gio::Action API.

 .../print_layouts/window_print_layout_edit.cc      |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/glom/mode_design/print_layouts/window_print_layout_edit.cc 
b/glom/mode_design/print_layouts/window_print_layout_edit.cc
index d577847..3b02986 100644
--- a/glom/mode_design/print_layouts/window_print_layout_edit.cc
+++ b/glom/mode_design/print_layouts/window_print_layout_edit.cc
@@ -1162,7 +1162,7 @@ void Window_PrintLayout_Edit::do_menu_view_show_outlines(bool active)
 void Window_PrintLayout_Edit::on_menu_view_zoom(int parameter)
 {
   //The state is not changed automatically:
-  m_action_zoom->change_state(Glib::Variant<int>::create(parameter)); //Change to change_state(percent) if 
we ever make that templated in glibmm.
+  m_action_zoom->change_state(parameter);
 
   if(parameter == 0) //For us, this means Fit Page Width.
   {