[Bug libffi/64572] r219477 breaks bootstrap on x86_64 darwin

[rth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64572

--- Comment #17 from Richard Henderson <rth at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #15)
> What about the other files used by darwin?

darwin.S is also unchanged.