[ostree] repo: Fix an obvious typo

[Matthew Barnes <mbarnes src gnome org>]

commit 81138963c380aac74d165348ec6f99b9bf0e2a1a
Author: Matthew Barnes <mbarnes redhat com>
Date:   Tue May 5 10:24:38 2015 -0400

    repo: Fix an obvious typo

 src/libostree/ostree-repo.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/libostree/ostree-repo.c b/src/libostree/ostree-repo.c
index 1ec18af..5499dc1 100644
--- a/src/libostree/ostree-repo.c
+++ b/src/libostree/ostree-repo.c
@@ -3295,7 +3295,7 @@ ostree_repo_sign_delta (OstreeRepo     *self,
   gs_unref_variant GVariant *commit_variant = NULL;
   gs_free char *delta_path = NULL;
   gs_unref_object GFile *delta_file = NULL;
-  gs_unref_object char *detached_metadata_relpath = NULL;
+  gs_free char *detached_metadata_relpath = NULL;
   gs_unref_object GFile *detached_metadata_path = NULL;
   gs_unref_variant GVariant *existing_detached_metadata = NULL;
   gs_unref_variant GVariant *normalized = NULL;