[gnome-shell] app-system: Use g_hash_table_iter_remove

[Jasper St. Pierre <jstpierre src gnome org>]

commit 0fd6ae5330226709c00c131efcfede6a2db8d5fe
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Sat Mar 16 16:50:16 2013 -0400

    app-system: Use g_hash_table_iter_remove
    
    glib now provides an iteration-safe way to remove items from
    the hash table, so use it instead of building a separate list.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=698486

 src/shell-app-system.c |   12 ++----------
 1 files changed, 2 insertions(+), 10 deletions(-)
---
diff --git a/src/shell-app-system.c b/src/shell-app-system.c
index 4d59fa3..03648f9 100644
--- a/src/shell-app-system.c
+++ b/src/shell-app-system.c
@@ -293,8 +293,6 @@ on_apps_tree_changed_cb (GMenuTree *tree,
   GHashTable *new_apps;
   GHashTableIter iter;
   gpointer key, value;
-  GSList *removed_apps = NULL;
-  GSList *removed_node;
 
   g_assert (tree == self->priv->apps_tree);
 
@@ -376,15 +374,9 @@ on_apps_tree_changed_cb (GMenuTree *tree,
       const char *id = key;
       
       if (!g_hash_table_lookup (new_apps, id))
-        removed_apps = g_slist_prepend (removed_apps, (char*)id);
+        g_hash_table_iter_remove (&iter);
     }
-  for (removed_node = removed_apps; removed_node; removed_node = removed_node->next)
-    {
-      const char *id = removed_node->data;
-      g_hash_table_remove (self->priv->id_to_app, id);
-    }
-  g_slist_free (removed_apps);
-      
+
   g_hash_table_destroy (new_apps);
 
   g_signal_emit (self, signals[INSTALLED_CHANGED], 0);