[Bug tree-optimization/78394] False positives of maybe-uninitialized with -Og

[linux at carewolf dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78394

--- Comment #9 from Allan Jensen <linux at carewolf dot com> ---
I see two other level effort ways to possibly fix the issue. Disable the
warning like for -O0 as it is buggy, or if we believe it still has some value
in -Og even with the false positivies, just removing it from -Wall or -Wextra,
so it at least doesn't get enabled unless explicitly asked for.