[Bug middle-end/80152] Not warning anymore about usage of uninitialized variables

[slomo at coaxion dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80152

--- Comment #3 from Sebastian Dröge <slomo at coaxion dot net> ---
But even after optimization, there would be the argc!=1 code path left, which
uses the uninitialized foo.