[gtk+] Add a missing introspection annotation for gdk_screen_get_default_colormap

[Matthias Clasen <matthiasc src gnome org>]

commit c85e7ec6d8d7bb0b1ea3dd6153edc8b985b51141
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Feb 22 14:15:45 2010 -0500

    Add a missing introspection annotation for gdk_screen_get_default_colormap

 gdk/x11/gdkscreen-x11.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gdk/x11/gdkscreen-x11.c b/gdk/x11/gdkscreen-x11.c
index 5b0cb17..1d274f4 100644
--- a/gdk/x11/gdkscreen-x11.c
+++ b/gdk/x11/gdkscreen-x11.c
@@ -234,7 +234,7 @@ gdk_screen_get_root_window (GdkScreen *screen)
  *
  * Gets the default colormap for @screen.
  * 
- * Returns: the default #GdkColormap.
+ * Returns: (transfer none): the default #GdkColormap.
  *
  * Since: 2.2
  **/