[ostree] core: Skip an unnecessary unlink() call

[Colin Walters <walters src gnome org>]

commit 8621eb85b1fe7f92ec3f52db166f559541d19098
Author: Colin Walters <walters verbum org>
Date:   Fri Nov 18 09:41:36 2011 -0500

    core: Skip an unnecessary unlink() call

 src/libostree/ostree-repo.c |    8 +++++---
 1 files changed, 5 insertions(+), 3 deletions(-)
---
diff --git a/src/libostree/ostree-repo.c b/src/libostree/ostree-repo.c
index d6c9ecd..1a1f10b 100644
--- a/src/libostree/ostree-repo.c
+++ b/src/libostree/ostree-repo.c
@@ -607,21 +607,23 @@ write_gvariant_to_tmp (OstreeRepo  *self,
       ot_util_set_error_from_errno (error, errno);
       goto out;
     }
+  g_free (tmp_name);
+  tmp_name = NULL;
 
   ret = TRUE;
   *out_tmpname = ot_gfile_new_for_path (dest_name);
   *out_checksum = checksum;
   checksum = NULL;
  out:
-  /* Unconditionally unlink; if we suceeded, there's a new link, if not, clean up. */
-  (void) unlink (tmp_name);
+  if (tmp_name)
+    (void) unlink (tmp_name);
+  g_free (tmp_name);
   if (fd != -1)
     close (fd);
   if (checksum)
     g_checksum_free (checksum);
   if (serialized != NULL)
     g_variant_unref (serialized);
-  g_free (tmp_name);
   g_free (dest_name);
   g_clear_object (&stream);
   return ret;