[Bug c++/63192] non-mutable lambda capture by value on reference does not apply const

[lichray at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63192

--- Comment #4 from Zhihao Yuan <lichray at gmail dot com> ---
(In reply to Zhihao Yuan from comment #3)
> Confirmed, please fix.  As the standardization of `std::as_const`, this bug
> becomes significant.

Never mind, I will create another bug report to demonstrate my issue (very
likely to have the same cause but with different result).