bug#17622: 24.4.50; bootstrap failure

[Eli Zaretskii]

> From: Fabrice Popineau <fabrice.popineau@gmail.com>
> Date: Thu, 29 May 2014 16:24:12 +0200
> Cc: Katsumi Yamaoka <yamaoka@jpl.org>, 17622 <17622@debbugs.gnu.org>, Eli 
> Zaretskii <eliz@gnu.org>
> 
> @@ -5282,6 +5277,10 @@
>    {
>      struct buffer *b;
> 
> +#ifndef WINDOWSNT
> +    mmap_regions = NULL;
> +    mmap_fd = -1;
> +#endif
>      /* We cannot dump buffers with meaningful addresses that can be
>         used by the dumped Emacs.  We map new memory for them here.  */
>      FOR_EACH_BUFFER (b)

That's what I did, except that this (and the FOR_EACH_BUFFER loop
after it) should only be done in the dumped emacs.