[egg-list-box] Add annotations for egg_list_box_select_child()

[Carl-Anton Ingmarsson <carlantoni src gnome org>]

commit 9b5f89cf5e75f5fb57a01149d258417aa68993ff
Author: Carl-Anton Ingmarsson <ca ingmarsson gmail com>
Date:   Sun Mar 31 15:23:04 2013 +0200

    Add annotations for egg_list_box_select_child()
    
    Mainly adding (allow-none) to the child parameter so that it is
    allowed to pass null from language bindings.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=697593

 egg-list-box.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/egg-list-box.c b/egg-list-box.c
index efe5fbb..54492de 100644
--- a/egg-list-box.c
+++ b/egg-list-box.c
@@ -519,6 +519,11 @@ egg_list_box_get_child_at_y (EggListBox *list_box, gint y)
 }
 
 
+/**
+ * egg_list_box_select_child:
+ * @self: a #EggListBox
+ * @child: (allow-none): The child to select or %NULL
+ */
 void
 egg_list_box_select_child (EggListBox *list_box, GtkWidget *child)
 {