fetch the nth iface entry of the type node in the nth loop iteration, not

fetch the nth iface entry of the type node in the nth loop iteration, not

Sat Jun 10 08:38:27 2000  Tim Janik  <timj@gtk.org>

        * gtype.c (type_class_init): fetch the nth iface entry of the
        type node in the nth loop iteration, not alwys the first.
        bug discovered by Walt Pohl <cher@suitware.com>.
        (type_data_finalize_class_ifaces): same here, cut and paste
        rulez.