[Bug c++/60336] empty struct value is passed differently in C and C++

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60336

--- Comment #39 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
You should also update gimplify.c's zero_sized_type to be the same as your
empty_record_p.