[gtk+] Fix annotations for gtk_accelerator_parse

[Matthias Clasen <matthiasc src gnome org>]

commit 02ac322c9a279c70a03490353f2c22e7405b7f6f
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Mar 12 21:23:25 2011 -0500

    Fix annotations for gtk_accelerator_parse
    
    Part of bug 644353, patch by Ulrik Sverdrup.

 gtk/gtkaccelgroup.c |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkaccelgroup.c b/gtk/gtkaccelgroup.c
index f131d06..a46ac68 100644
--- a/gtk/gtkaccelgroup.c
+++ b/gtk/gtkaccelgroup.c
@@ -1147,8 +1147,10 @@ is_hyper (const gchar *string)
 /**
  * gtk_accelerator_parse:
  * @accelerator: string representing an accelerator
- * @accelerator_key: (out): return location for accelerator keyval
- * @accelerator_mods: (out): return location for accelerator modifier mask
+ * @accelerator_key: (out) (allow-none): return location for accelerator
+ *     keyval, or %NULL
+ * @accelerator_mods: (out) (allow-none): return location for accelerator
+ *     modifier mask, %NULL
  *
  * Parses a string representing an accelerator. The
  * format looks like "&lt;Control&gt;a" or "&lt;Shift&gt;&lt;Alt&gt;F1"