Function cstr_opt_as_ptr

crates/stdlib/src/socket.rs:2668–2670

(x: &OptionalArg<ffi::CString>)

    }

    fn cstr_opt_as_ptr(x: &OptionalArg<ffi::CString>) -> *const libc::c_char {
        x.as_ref().map_or_else(core::ptr::null, |s| s.as_ptr())
    }

    #[pyfunction]
    fn getservbyname(