[Bug fortran/104888] diagnostics use non-idiomatic '%s'

[roland.illig at gmx dot de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104888

--- Comment #5 from Roland Illig <roland.illig at gmx dot de> ---
Related, in trans-openmp.cc:
> "specified at %L "

The space at the end is too much.