[Bug c/63480] -Wmissing-field-initializers should not warn about intentionally empty initializers (or that should be a separate option)

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63480

--- Comment #6 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Also note PR39589, a request for -Wmissing-field-initializers=2, but it's not
as trivial as it seems.