[Bug c/61328] valgrind finds problem in find_bswap_or_nop_1

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61328

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Thomas Preud'homme from comment #1)
> *facepalm*
> 
> Yes indeed. Does this qualify for an obvious fix as per commiting rules?

Yes.