Update nitrokey crate to 0.4.0

This change finally updates the version of the nitrokey crate that we
consume to 0.4.0. Along with that we update rand_core, one of its
dependencies, to 0.5.1. Further more we add cfg-if in version 0.1.10 and
getrandom in version 0.1.13, both of which are now new (non-development)
dependencies.

Import subrepo nitrokey/:nitrokey at e81057037e9b4f370b64c0a030a725bc6bdfb870
Import subrepo cfg-if/:cfg-if at 4484a6faf816ff8058088ad857b0c6bb2f4b02b2
Import subrepo getrandom/:getrandom at d661aa7e1b8cc80b47dabe3d2135b3b47d2858af
Import subrepo rand/:rand at d877ed528248b52d947e0484364a4e1ae59ca502

1 files changed, 0 insertions, 53 deletions

diff --git a/rand/rand_os/src/macos.rs b/rand/rand_os/src/macos.rs
deleted file mode 100644
index 6c67251..0000000
--- a/rand/rand_os/src/macos.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright 2018 Developers of the Rand project.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-//! Implementation for MacOS / iOS
-
-extern crate libc;
-
-use rand_core::{Error, ErrorKind};
-use super::OsRngImpl;
-
-use std::io;
-use self::libc::{c_int, size_t};
-
-#[derive(Clone, Debug)]
-pub struct OsRng;
-
-enum SecRandom {}
-
-#[allow(non_upper_case_globals)]
-const kSecRandomDefault: *const SecRandom = 0 as *const SecRandom;
-
-#[link(name = "Security", kind = "framework")]
-extern {
-    fn SecRandomCopyBytes(rnd: *const SecRandom,
-                          count: size_t, bytes: *mut u8) -> c_int;
-}
-
-impl OsRngImpl for OsRng {
-    fn new() -> Result<OsRng, Error> { Ok(OsRng) }
-
-    fn fill_chunk(&mut self, dest: &mut [u8]) -> Result<(), Error> {
-        let ret = unsafe {
-            SecRandomCopyBytes(kSecRandomDefault,
-                               dest.len() as size_t,
-                               dest.as_mut_ptr())
-        };
-        if ret == -1 {
-            Err(Error::with_cause(
-                ErrorKind::Unavailable,
-                "couldn't generate random bytes",
-                io::Error::last_os_error()))
-        } else {
-            Ok(())
-        }
-    }
-
-    fn method_str(&self) -> &'static str { "SecRandomCopyBytes" }
-}