[ostree] Update to latest libgsystem

[Colin Walters <walters src gnome org>]

commit fddc11ca74197b9cc3a3b5912396349277707ef8
Author: Colin Walters <walters verbum org>
Date:   Thu Dec 20 20:50:02 2012 -0500

    Update to latest libgsystem
    
    Has a bugfix change to gs_subprocess_new().

 src/libgsystem                 |    2 +-
 src/libotutil/ot-spawn-utils.c |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/libgsystem b/src/libgsystem
index 1705399..0734be8 160000
--- a/src/libgsystem
+++ b/src/libgsystem
@@ -1 +1 @@
-Subproject commit 17053992189a7a4ee2fe8540bb35832a5f695a77
+Subproject commit 0734be8c1211ba04ecdd14ff30b6c07dbf3b9a84
diff --git a/src/libotutil/ot-spawn-utils.c b/src/libotutil/ot-spawn-utils.c
index 8874cd2..71937e2 100644
--- a/src/libotutil/ot-spawn-utils.c
+++ b/src/libotutil/ot-spawn-utils.c
@@ -40,7 +40,7 @@ ot_spawn_sync_checked (const char           *cwd,
   if (cwd)
     gs_subprocess_context_set_cwd (context, cwd);
 
-  if ((proc = gs_subprocess_new (context, error)) == NULL)
+  if ((proc = gs_subprocess_new (context, cancellable, error)) == NULL)
     goto out;
   
   if (!gs_subprocess_wait_sync_check (proc, cancellable, error))