[Bug c/117178] -Wunterminated-string-initialization should ignore trailing NUL byte for nonstring char arrays

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117178

--- Comment #25 from Sam James <sjames at gcc dot gnu.org> ---
It's not my call, but given it's a new warning in 15, and this is a fairly
significant UX issue with it, I think a case could be made.

Kees should ping it when he gets a chance.