[RFA] Fix compilation error on FreeBSD/i386

[Nick Clifton]

Hi Mark,

> from  Mark Kettenis  <kettenis@gnu.org>
> 
> 	* elf.c (elfcore_write_prstatus): Make sure we pass the address of
> 	prstat.pr_reg even if it is a struct.

Approved - please apply.

Cheers
        Nick