[libpeas] Fix crash when searching a plugin in the manager.

[Steve Frécinaux <sfre src gnome org>]

commit 4b147efeaba4b9e71402088836155aff3f8c55a6
Author: Steve Frécinaux <code istique net>
Date:   Sun Mar 6 12:48:26 2011 +0100

    Fix crash when searching a plugin in the manager.
    
    When the show-builtins property is set to false, we need to convert the
    original tree model iter to a filtered tree model iter before using it
    or things will go wrong.

 libpeas-gtk/peas-gtk-plugin-manager-view.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/libpeas-gtk/peas-gtk-plugin-manager-view.c b/libpeas-gtk/peas-gtk-plugin-manager-view.c
index a52b6e8..a3ad6bc 100644
--- a/libpeas-gtk/peas-gtk-plugin-manager-view.c
+++ b/libpeas-gtk/peas-gtk-plugin-manager-view.c
@@ -267,6 +267,7 @@ name_search_cb (GtkTreeModel             *model,
                 GtkTreeIter              *iter,
                 PeasGtkPluginManagerView *view)
 {
+  GtkTreeIter child_iter = *iter;
   PeasPluginInfo *info;
   gchar *normalized_string;
   gchar *normalized_key;
@@ -275,7 +276,8 @@ name_search_cb (GtkTreeModel             *model,
   gint key_len;
   gboolean retval;
 
-  info = peas_gtk_plugin_manager_store_get_plugin (view->priv->store, iter);
+  convert_iter_to_child_iter (view, &child_iter);
+  info = peas_gtk_plugin_manager_store_get_plugin (view->priv->store, &child_iter);
 
   if (info == NULL)
     return FALSE;