[Bug c++/62170] wrong quoting (and colors) for typedef diagnostics

[dmalcolm at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62170

--- Comment #3 from David Malcolm <dmalcolm at gcc dot gnu.org> ---
Candidate patch posted for review:
  https://gcc.gnu.org/ml/gcc-patches/2017-06/msg00242.html