libstdc++: Remove duplicate #include in <string_view>
When I added the new C++23 constructor I added a conditional include of
<bits/ranges_base.h>, which was already being included unconditionally.
This removes the unconditional include but changes the condition for the
other one, so it's used for C++20 as well.
Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* include/std/string_view: Only include <bits/ranges_base.h>
once, and only for C++20 and later.
git://gcc.gnu.org / gcc.git / commit