[Bug c/67925] docs lie about being unable to inline function call before definition

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67925

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Patches welcome ;)  I think refering to -Winline here might make most sense.