[Bug c++/20313] in diagnostic is confusing

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=20313

--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Jonathan Wakely from comment #7)
> That would mean we use "N" instead of "<anonymous>".

Oops, sorry, in this PR it would be "i" not "N".