libiberty/md5: fix strict alias warnings

[Uros Bizjak]

Hello!

> > 2012-07-27  Mike Frysinger  <vapier@gentoo.org>
> >
> >         * md5.c (md5_finish_ctx): Declare swap_bytes.  Assign SWAP() output
> >         to swap_bytes, and then call memcpy to move it to ctx->buffer.
> >
> >    /* Take yet unprocessed bytes into account.  */
> > -  md5_uint32 bytes = ctx->buflen;
> > +  md5_uint32 swap_bytes, bytes = ctx->buflen;
>
> Please add a new line, rather than declaring one uninitialized and one
> initialized variable on the same line.
>
> This patch is OK with that change.

I have committed this patch to mainline SVN, together with requested change.

Uros.