Fix to avoid warning

[Mark Kettenis]

   From: Ulrich Drepper <drepper@redhat.com>
   Date: 10 Feb 2001 09:21:21 -0800

   Mark Kettenis <kettenis@wins.uva.nl> writes:

   > This patch avoids a "function declaration isn't a prototype" warning
   > on the Hurd.  Probably more fall-out from the <time.h>/<sys/time.h>
   > header cleanup.

   Please apply it.

Done.