[clutter] actor: Fix transform-set condition

[Emmanuele Bassi <ebassi src gnome org>]

commit 696f1afc041cdc76293931cf90fee99f8a0aecd2
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Tue Sep 25 09:05:39 2012 +0100

    actor: Fix transform-set condition
    
    The :transform-set property is set if the matrix in :transform is not
    the identity matrix.

 clutter/clutter-actor.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/clutter/clutter-actor.c b/clutter/clutter-actor.c
index d4a64e3..ab5c971 100644
--- a/clutter/clutter-actor.c
+++ b/clutter/clutter-actor.c
@@ -15772,7 +15772,7 @@ clutter_actor_set_transform_internal (ClutterActor        *self,
   was_set = info->transform_set;
 
   info->transform = *transform;
-  info->transform_set = cogl_matrix_is_identity (&info->transform);
+  info->transform_set = !cogl_matrix_is_identity (&info->transform);
 
   self->priv->transform_valid = FALSE;