[yavgui] GState: mark getter as const.

* yavgui/src/g_state.hh,
* yavgui/src/g_state.hxx: Do that.

ChangeLog

+2009-08-04  d-halluin  <d-halluin@lrde.epita.fr>
+
+	[yavgui] GState: mark getter as const.
+
+	* yavgui/src/g_state.hh,
+	* yavgui/src/g_state.hxx: Do that.
+
 2009-08-04  d-halluin  <d-halluin@lrde.epita.fr>
 	[yavgui] Enable transition deletion.

yavgui/src/g_state.hh

@@ -78,7 +78,7 @@ namespace gui
       inline void set_final_entry (QString final_entry);
       inline QString final_entry ();
 
-      inline int index ();
+      inline int index () const;
 
     public slots:
       void refresh ();

yavgui/src/g_state.hxx

@@ -85,7 +85,8 @@ namespace gui
       final_entry_ = final_entry;
     }
 
-    int GState::index ()
+    int
+    GState::index () const
     {
       return index_;
     }