[Bug c/120511] Initializer warning on universal zero initializer for array element with double member

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120511

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this is on purpose, here there is an array, so the "universal zero
initializer" is not checked.

Note for C23, you could just use `{}` (the manual needs to be updated for
that).