[gtk+] Fix method to update menu sensitivity of combo box

[Matthias Clasen <matthiasc src gnome org>]

commit 5088b4937e77a6aa7b828e6a9ce66e47ef7deceb
Author: Adam Reichold <adam reichold t-online de>
Date:   Sun Dec 6 11:30:58 2015 +0100

    Fix method to update menu sensitivity of combo box
    
    After removal of the selectable header and separator from the combo box,
    the method to update the menu sensitivity must be changed as it assumes
    at least two items within each sub menu and contains special handling
    for the separator. Removing this fixes bug #759079.

 gtk/gtkcombobox.c |   12 ++----------
 1 files changed, 2 insertions(+), 10 deletions(-)
---
diff --git a/gtk/gtkcombobox.c b/gtk/gtkcombobox.c
index 0831ce6..c630422 100644
--- a/gtk/gtkcombobox.c
+++ b/gtk/gtkcombobox.c
@@ -2073,7 +2073,7 @@ update_menu_sensitivity (GtkComboBox *combo_box,
 {
   GtkComboBoxPrivate *priv = combo_box->priv;
   GList *children, *child;
-  GtkWidget *item, *submenu, *separator;
+  GtkWidget *item, *submenu;
   GtkWidget *cell_view;
   gboolean sensitive;
 
@@ -2099,15 +2099,7 @@ update_menu_sensitivity (GtkComboBox *combo_box,
       else
         {
           sensitive = cell_layout_is_sensitive (GTK_CELL_LAYOUT (cell_view));
-
-          if (menu != priv->popup_widget && child == children)
-            {
-              separator = GTK_WIDGET (child->next->data);
-              g_object_set (item, "visible", sensitive, NULL);
-              g_object_set (separator, "visible", sensitive, NULL);
-            }
-          else
-            gtk_widget_set_sensitive (item, sensitive);
+          gtk_widget_set_sensitive (item, sensitive);
         }
     }