test: skip test_utun_ifname if unpriviledged (#2371)

Author: SteveLauC

test/sys/test_sockopt.rs

@@ -832,6 +832,8 @@ fn test_ktls() {
 #[test]
 #[cfg(apple_targets)]
 fn test_utun_ifname() {
+    skip_if_not_root!("test_utun_ifname");
+
     use nix::sys::socket::connect;
     use nix::sys::socket::SysControlAddr;
 

test/test.rs

@@ -3,6 +3,7 @@ extern crate cfg_if;
 #[cfg_attr(not(any(target_os = "redox", target_os = "haiku")), macro_use)]
 extern crate nix;
 
+#[macro_use]
 mod common;
 mod mount;
 mod sys;