[Bug libfortran/83168] FAIL: gfortran.dg/fmt_f0_2.f90 with a sanitized libgfortran

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83168

--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Should this be backported?

No strong opinion, but it fixes a latent bug.