bug#72842: Compile error due to lto warning on Arch Linux -Werror=maybe-uninitialized

[Paul Eggert]

I'm not seeing that false alarm when building coreutils v9.5 on Ubuntu 
24.04 LTS with "./configure --enable-gcc-warnings CC=gcc-14".

What GCC version are you using? If it's not GCC 14, try upgrading. I'm 
using gcc-14 (Ubuntu 14-20240412-0ubuntu1) 14.0.1 20240412 
(experimental) [master r14-9935-g67e1433a94f].