[gtk+] Add missing allow-none annotations

[William Jon McCann <mccann src gnome org>]

commit 99fa59c961121498820782d1faae0f1fe44beb1f
Author: William Jon McCann <william jon mccann gmail com>
Date:   Fri Jun 21 16:02:31 2013 -0400

    Add missing allow-none annotations

 gtk/gtkiconfactory.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtkiconfactory.c b/gtk/gtkiconfactory.c
index 7cc1af9..7dfd888 100644
--- a/gtk/gtkiconfactory.c
+++ b/gtk/gtkiconfactory.c
@@ -986,8 +986,8 @@ icon_size_lookup_intern (GtkSettings *settings,
  * @settings: a #GtkSettings object, used to determine
  *   which set of user preferences to used.
  * @size: (type int): an icon size
- * @width: (out): location to store icon width
- * @height: (out): location to store icon height
+ * @width: (out) (allow-none): location to store icon width
+ * @height: (out) (allow-none): location to store icon height
  *
  * Obtains the pixel size of a semantic icon size, possibly
  * modified by user preferences for a particular
@@ -1018,8 +1018,8 @@ gtk_icon_size_lookup_for_settings (GtkSettings *settings,
 /**
  * gtk_icon_size_lookup:
  * @size: (type int): an icon size
- * @width: (out): location to store icon width
- * @height: (out): location to store icon height
+ * @width: (out) (allow-none): location to store icon width
+ * @height: (out) (allow-none): location to store icon height
  *
  * Obtains the pixel size of a semantic icon size, possibly
  * modified by user preferences for the default #GtkSettings.