[Bug libstdc++/111050] [11/12/13/14 Regression] ABI break in _Hash_node_value_base since GCC 11

[rs2740 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111050

--- Comment #7 from TC <rs2740 at gmail dot com> ---
Confirmed with my reporter that this fixes their actual code too.