Fix netbsd

Author: sfackler

src/libstd/sys/common/net.rs

@@ -27,19 +27,19 @@ use time::Duration;
 
 #[cfg(any(target_os = "dragonfly", target_os = "freebsd",
           target_os = "ios", target_os = "macos",
-          target_os = "openbsd"))]
+          target_os = "openbsd", target_os = "netbsd"))]
 use sys::net::netc::IPV6_JOIN_GROUP as IPV6_ADD_MEMBERSHIP;
 #[cfg(not(any(target_os = "dragonfly", target_os = "freebsd",
               target_os = "ios", target_os = "macos",
-              target_os = "openbsd")))]
+          target_os = "openbsd", target_os = "netbsd")))]
 use sys::net::netc::IPV6_ADD_MEMBERSHIP;
 #[cfg(any(target_os = "dragonfly", target_os = "freebsd",
           target_os = "ios", target_os = "macos",
-          target_os = "openbsd"))]
+          target_os = "openbsd", target_os = "netbsd"))]
 use sys::net::netc::IPV6_LEAVE_GROUP as IPV6_DROP_MEMBERSHIP;
 #[cfg(not(any(target_os = "dragonfly", target_os = "freebsd",
               target_os = "ios", target_os = "macos",
-              target_os = "openbsd")))]
+          target_os = "openbsd", target_os = "netbsd")))]
 use sys::net::netc::IPV6_DROP_MEMBERSHIP;
 
 ////////////////////////////////////////////////////////////////////////////////