[gnome-control-center/extensible-shell] shell: fix compiler warnings by casting to correct type

[Thomas Wood <thos src gnome org>]

commit f7d10e3e29ec24dc6edd74956dfbcf9e857370eb
Author: Thomas Wood <thomas wood intel com>
Date:   Wed Feb 24 22:15:15 2010 +0000

    shell: fix compiler warnings by casting to correct type

 shell/control-center.c |    9 +++++----
 1 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/shell/control-center.c b/shell/control-center.c
index fd79b5e..7776ce5 100644
--- a/shell/control-center.c
+++ b/shell/control-center.c
@@ -658,14 +658,15 @@ main (int argc, char **argv)
 
       start_id = argv[1];
 
-      iter_valid = gtk_tree_model_get_iter_first (data->store, &iter);
+      iter_valid = gtk_tree_model_get_iter_first (GTK_TREE_MODEL (data->store),
+                                                  &iter);
 
       while (iter_valid)
         {
           gchar *id;
 
           /* find the details for this item */
-          gtk_tree_model_get (data->store, &iter,
+          gtk_tree_model_get (GTK_TREE_MODEL (data->store), &iter,
                               COL_NAME, &name,
                               COL_ID, &id,
                               -1);
@@ -683,8 +684,8 @@ main (int argc, char **argv)
               id = NULL;
             }
 
-
-          iter_valid = gtk_tree_model_iter_next (data->store, &iter);
+          iter_valid = gtk_tree_model_iter_next (GTK_TREE_MODEL (data->store),
+                                                 &iter);
         }
 
       g_free (data->current_title);