[Bug c++/91212] [8/9/10 Regression] const ignored for ctor arguments within return since r8-2493-g4ce8c5dea53d8073

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91212

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Jason, do you want to change anything here?  Though clang/icc/msvc++ seem to
choose #1.