[PATCH] Fix buffer overrun found by Coverity

[Gary Benson]

Tom Tromey wrote:
> >>>>> "Gary" == Gary Benson <gbenson@redhat.com> writes:
> 
> Gary> I don't *think* it's necessary:
> [...]
> 
> I agree, thanks for breaking it down for me.
> 
> Gary> Ok, so this one's built and regtested on RHEL 7.5 x86_64 now,
> Gary> with the fission-dwp.exp board.  Assuming the dimensions thing
> Gary> above is correct, is this ok to commit?
> 
> Yes, thank you.

Cool, I've pushed it.  Thanks for the review :D

Cheers,
Gary