[gtk+] GtkIconView: Fix a segfault

[Matthias Clasen <matthiasc src gnome org>]

commit b84d37af4d3abaccc4e8dfa55b2750ebac495418
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Nov 23 17:49:46 2011 -0500

    GtkIconView: Fix a segfault
    
    Keynav on an empty iconview was causing segfaults. This
    was reported in https://bugzilla.gnome.org/show_bug.cgi?id=664456

 gtk/gtkiconview.c |   30 ++++++++++++++++++++++--------
 1 files changed, 22 insertions(+), 8 deletions(-)
---
diff --git a/gtk/gtkiconview.c b/gtk/gtkiconview.c
index e527dde..e12bd46 100644
--- a/gtk/gtkiconview.c
+++ b/gtk/gtkiconview.c
@@ -3769,11 +3769,18 @@ gtk_icon_view_move_cursor_up_down (GtkIconView *icon_view,
       else
 	list = g_list_last (icon_view->priv->items);
 
-      item = list ? list->data : NULL;
+      if (list)
+        {
+          item = list->data;
 
-      /* Give focus to the first cell initially */
-      gtk_icon_view_set_cell_data (icon_view, item);
-      gtk_cell_area_focus (icon_view->priv->cell_area, direction);
+          /* Give focus to the first cell initially */
+          gtk_icon_view_set_cell_data (icon_view, item);
+          gtk_cell_area_focus (icon_view->priv->cell_area, direction);
+        }
+      else
+        {
+          item = NULL;
+        }
     }
   else
     {
@@ -3914,11 +3921,18 @@ gtk_icon_view_move_cursor_left_right (GtkIconView *icon_view,
       else
 	list = g_list_last (icon_view->priv->items);
 
-      item = list ? list->data : NULL;
+      if (list)
+        {
+          item = list->data;
 
-      /* Give focus to the first cell initially */
-      gtk_icon_view_set_cell_data (icon_view, item);
-      gtk_cell_area_focus (icon_view->priv->cell_area, direction);
+          /* Give focus to the first cell initially */
+          gtk_icon_view_set_cell_data (icon_view, item);
+          gtk_cell_area_focus (icon_view->priv->cell_area, direction);
+        }
+      else
+        {
+          item = NULL;
+        }
     }
   else
     {