[gnome-contacts] Fix -Werror=format-security issue

[Alexander Larsson <alexl src gnome org>]

commit ddb1307a5ad226f1daa731a109ce638c5950c70f
Author: Gert Kulyk <gkulyk yahoo de>
Date:   Tue Jan 31 16:21:40 2012 +0100

    Fix -Werror=format-security issue

 src/contacts-new-contact-dialog.vala |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/contacts-new-contact-dialog.vala b/src/contacts-new-contact-dialog.vala
index faf98ad..f0f0960 100644
--- a/src/contacts-new-contact-dialog.vala
+++ b/src/contacts-new-contact-dialog.vala
@@ -207,6 +207,7 @@ public class Contacts.NewContactDialog : Dialog {
 				   DialogFlags.MODAL | DialogFlags.DESTROY_WITH_PARENT,
 				   MessageType.ERROR,
 				   ButtonsType.CLOSE,
+				   "%s",
 				   _("You must specify a contact name"));
 	d.show_all ();
 	d.response.connect ( (response_id) => {