[Bug c/107730] Trivial -Wreturn-type false positive when function marked static

[sam at gentoo dot org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107730

--- Comment #1 from Sam James <sam at gentoo dot org> ---
Note that if I drop 'static', the warning goes away. Clang does not warn at
all.