Function dia_args::paths::permissions::ensure_second_is_safe

pub fn ensure_second_is_safe<P, Q>(first: P, second: Q) -> Result<()> where
    P: AsRef<Path>,
    Q: AsRef<Path>, 

Ensures that the second file's permissions must be equal to, or more restrictive than the first one's

This function always returns Ok(()) on non-Unix systems.