[Bug c/56724] sub-optimal location in error

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56724

--- Comment #13 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Yea, you're right, not everything has been fixed.  I'll fix up this specific
case in a bit, thanks for reporting it.