[ostree] Update to the latest libgsystem

[Colin Walters <walters src gnome org>]

commit 227d22adcaa6397c4fa21bc3fd071ed453f5319d
Author: Colin Walters <walters verbum org>
Date:   Mon Dec 3 12:05:41 2012 -0500

    Update to the latest libgsystem

 src/libgsystem                 |    2 +-
 src/libotutil/ot-spawn-utils.c |    4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/src/libgsystem b/src/libgsystem
index 1a9d727..56d7273 160000
--- a/src/libgsystem
+++ b/src/libgsystem
@@ -1 +1 @@
-Subproject commit 1a9d727e115cf5f813dcb5761a65836b2aff4d1d
+Subproject commit 56d727341706c82742c5427bef35cdde00c3713a
diff --git a/src/libotutil/ot-spawn-utils.c b/src/libotutil/ot-spawn-utils.c
index 5a551fe..8874cd2 100644
--- a/src/libotutil/ot-spawn-utils.c
+++ b/src/libotutil/ot-spawn-utils.c
@@ -33,8 +33,8 @@ ot_spawn_sync_checked (const char           *cwd,
                        GError              **error)
 {
   gboolean ret = FALSE;
-  gs_lobj GSSubprocessContext *context = NULL;
-  gs_lobj GSSubprocess *proc = NULL;
+  gs_unref_object GSSubprocessContext *context = NULL;
+  gs_unref_object GSSubprocess *proc = NULL;
 
   context = gs_subprocess_context_new (argv);
   if (cwd)