sparc: fix for missing include file

[Richard Henderson]

On 12/15/2014 03:34 AM, Will Newton wrote:
> Loading a zero constant into c is cheap and the side effect of the
> undefined behaviour is potentially a write to memory so it is not
> always going to be a performance win to do this. Also potentially
> runtime analysis tools (e.g. sanitizers, valgrind) may trip over this
> so it seems to me a better idea just to not invoke undefined
> behaviours.

My thoughts exactly.


r~