[ostree] core: Fix regression in previous commit

[Colin Walters <walters src gnome org>]

commit b4d408f48321f36d9382d77e7e12db4dacf0116a
Author: Colin Walters <walters verbum org>
Date:   Fri Oct 12 15:25:25 2012 -0400

    core: Fix regression in previous commit

 src/libotutil/ot-gio-utils.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)
---
diff --git a/src/libotutil/ot-gio-utils.c b/src/libotutil/ot-gio-utils.c
index 1e98516..bf3743d 100644
--- a/src/libotutil/ot-gio-utils.c
+++ b/src/libotutil/ot-gio-utils.c
@@ -60,7 +60,10 @@ ot_gfile_ensure_directory (GFile     *dir,
   if (with_parents)
     {
       ot_lobj GFile *parent = g_file_get_parent (dir);
-      ret = ot_gfile_ensure_directory (parent, TRUE, &temp_error);
+      if (parent)
+        ret = ot_gfile_ensure_directory (parent, TRUE, &temp_error);
+      else
+        ret = TRUE;
     }
   else
     ret = g_file_make_directory (dir, NULL, &temp_error);