[seahorse-plugins] Fix usage of g_strconcat

[Adam Schreiber <sadam src gnome org>]

commit aab8e97abe9bd9f4bb2bb2b0acb9f6ca49722bb2
Author: Adam Schreiber <sadam gnome org>
Date:   Sun Jan 24 21:19:31 2010 -0500

    Fix usage of g_strconcat

 libseahorse/seahorse-gpg-options.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libseahorse/seahorse-gpg-options.c b/libseahorse/seahorse-gpg-options.c
index 949c026..030726c 100644
--- a/libseahorse/seahorse-gpg-options.c
+++ b/libseahorse/seahorse-gpg-options.c
@@ -213,7 +213,7 @@ parse_home_directory (gpgme_engine_info_t engine, GError **err)
 
                     /* If it's not a rooted path then expand */
                     if (t[0] == '~') {
-                        gpg_homedir = g_strconcat (g_get_home_dir(), ++t);
+                        gpg_homedir = g_strconcat (g_get_home_dir(), ++t, NULL);
                     } else {
                         gpg_homedir = g_strdup (t);
                     }