generate an error for the new Pipe type in typedef

Pick up change from Samba:

    commit 5d0d45c9a71f137dc29ca79d49bd558f34bf1ff5
    Author: Matthieu Patou <mat@matws.net>
    Date:   Sun Sep 29 00:42:36 2013 -0700

    pidl-wireshark: generate an error for the new Pipe type in typedef

    Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>

Change-Id: I9e6da50b657f774fadf7c3777900d409999d4660
Reviewed-on: https://code.wireshark.org/review/5094
Reviewed-by: Guy Harris <guy@alum.mit.edu>