[ostree] diff: Use gs_unref_object not gs_free on a GFile

[Colin Walters <walters src gnome org>]

commit 0a7c1851d9c47c50aa5cdc7f19e368a0261032d7
Author: Giuseppe Scrivano <gscrivan redhat com>
Date:   Thu Oct 30 11:05:47 2014 +0100

    diff: Use gs_unref_object not gs_free on a GFile
    
    Signed-off-by: Giuseppe Scrivano <gscrivan redhat com>

 src/ostree/ot-builtin-diff.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/ostree/ot-builtin-diff.c b/src/ostree/ot-builtin-diff.c
index 00de8cb..65d55be 100644
--- a/src/ostree/ot-builtin-diff.c
+++ b/src/ostree/ot-builtin-diff.c
@@ -43,7 +43,7 @@ parse_file_or_commit (OstreeRepo  *repo,
                       GError     **error)
 {
   gboolean ret = FALSE;
-  gs_free GFile *ret_file = NULL;
+  gs_unref_object GFile *ret_file = NULL;
 
   if (g_str_has_prefix (arg, "/")
       || g_str_has_prefix (arg, "./")