[PATCH] Define/use pad_to_pow_two() instead of open coding it

[Mark Kettenis]

> From: Matt Turner <mattst88 at gmail.com>
> Date: Wed, 24 Mar 2010 13:57:15 -0400
>
> diff --git a/hw/dmx/dmxpict.c b/hw/dmx/dmxpict.c
> index 072e3a6..51616bb 100644
> --- a/hw/dmx/dmxpict.c
> +++ b/hw/dmx/dmxpict.c
> @@ -674,7 +674,7 @@ static int dmxProcRenderSetPictureFilter(ClientPtr client)
>  
>      if (pPictPriv->pict) {
>  	filter  = (char *)(stuff + 1);
> -	params  = (XFixed *)(filter + ((stuff->nbytes + 3) & ~3));
> +	params  = (XFixed *)(filter + pad_to_pow_two(stuff->nbytes, 4));

Sorry, but to me this isn't an improvement.  I probably spend to much
time on kernel hacking, but the origional is immediately obvious to
me, whereas the new line makes me think you're trying to align to a
16-byte boundary.