[gthumb] fixed crash when opening the preferences dialog

[Paolo Bacchilega <paobac src gnome org>]

commit b8de149b361893e41019da97ac23b2ee839a71a9
Author: Paolo Bacchilega <paobac src gnome org>
Date:   Thu Oct 10 21:12:43 2013 +0200

    fixed crash when opening the preferences dialog

 gthumb/dlg-preferences-extensions.c |   25 +++++++++++++++----------
 1 files changed, 15 insertions(+), 10 deletions(-)
---
diff --git a/gthumb/dlg-preferences-extensions.c b/gthumb/dlg-preferences-extensions.c
index 1d0921f..7edc6b0 100644
--- a/gthumb/dlg-preferences-extensions.c
+++ b/gthumb/dlg-preferences-extensions.c
@@ -408,6 +408,8 @@ get_category_cardinality (BrowserData *data,
                                n += original_status_is_active ? 0 : 1;
                        else if (g_strcmp0 (category_name, description->category) == 0)
                                n += 1;
+
+                       g_object_unref (description);
                }
                while (gtk_tree_model_iter_next (tree_model, &iter));
        }
@@ -618,6 +620,8 @@ category_model_visible_func (GtkTreeModel *model,
        else
                visible = g_strcmp0 (description->category, data->current_category) == 0;
 
+       g_object_unref (description);
+
        return visible;
 }
 
@@ -671,20 +675,10 @@ extensions__dlg_preferences_construct_cb (GtkWidget  *dialog,
        data->list_store = gtk_list_store_new (EXTENSION_COLUMNS,
                                               G_TYPE_OBJECT,
                                               G_TYPE_BOOLEAN);
-       data->model_filter = gtk_tree_model_filter_new (GTK_TREE_MODEL (data->list_store), NULL);
-       data->list_view = gtk_tree_view_new_with_model (data->model_filter);
-       g_object_unref (data->model_filter);
-       g_object_unref (data->list_store);
-        gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (data->list_view), FALSE);
-        gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (data->list_view), TRUE);
 
-        add_columns (GTK_TREE_VIEW (data->list_view), data);
        gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (data->list_store), 0, extension_compare_func, 
NULL, NULL);
         gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (data->list_store), 0, GTK_SORT_ASCENDING);
 
-       gtk_widget_show (data->list_view);
-       gtk_container_add (GTK_CONTAINER (GET_WIDGET ("extensions_scrolledwindow")), data->list_view);
-
        extensions = gth_extension_manager_get_extensions (manager);
        for (scan = extensions; scan; scan = scan->next) {
                const char              *name = scan->data;
@@ -703,6 +697,17 @@ extensions__dlg_preferences_construct_cb (GtkWidget  *dialog,
        }
        g_list_free (extensions);
 
+       data->model_filter = gtk_tree_model_filter_new (GTK_TREE_MODEL (data->list_store), NULL);
+       data->list_view = gtk_tree_view_new_with_model (data->model_filter);
+        gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (data->list_view), FALSE);
+        gtk_tree_view_set_rules_hint (GTK_TREE_VIEW (data->list_view), TRUE);
+        add_columns (GTK_TREE_VIEW (data->list_view), data);
+       gtk_widget_show (data->list_view);
+       gtk_container_add (GTK_CONTAINER (GET_WIDGET ("extensions_scrolledwindow")), data->list_view);
+
+       g_object_unref (data->model_filter);
+       g_object_unref (data->list_store);
+
        /* the category combobox */
 
        add_category_combobox_columns (GET_WIDGET ("category_combobox"), data);