[clutter] Adds (allow-none) as source_target for clutter_state_set_key

[Emmanuele Bassi <ebassi src gnome org>]

commit 1e05e8ceaff25dfb3600cf0798fbca23c1725e12
Author: Jeremy Moles <jeremy emperorlinux com>
Date:   Thu Dec 1 10:36:38 2011 +0000

    Adds (allow-none) as source_target for clutter_state_set_key
    
    While working through the Python3/pygobject bindings, I came across a missing
    (allow-none) in clutter_state_set_key(). This allows the API to specify to None
    as the source_target.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=664996

 clutter/clutter-state.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/clutter/clutter-state.c b/clutter/clutter-state.c
index 17885c9..cb512d9 100644
--- a/clutter/clutter-state.c
+++ b/clutter/clutter-state.c
@@ -1169,7 +1169,7 @@ clutter_state_fetch_state (ClutterState *state,
 /**
  * clutter_state_set_key:
  * @state: a #ClutterState instance.
- * @source_state_name: the source transition to specify transition for or NULL
+ * @source_state_name: (allow-none): the source transition to specify transition for or NULL
  *   to specify the default fallback when a more specific source_state doesn't
  *   exist.
  * @target_state_name: the name of the transition to set a key value for.