Fix building, there were a missing _new ->_dup_singleton.
Fix building, there were a missing _new ->_dup_singleton.

svn path=/trunk/; revision=2235

Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,Distrotech/telepathy-account-widgets,GNOME/telepathy-account-widgets,GNOME/telepathy-account-widgets