Use unmodified FreeBSD versions for port_*.h

freebsd/lib/libc/include/port_after.h

@@ -0,0 +1,11 @@
+/* $FreeBSD$ */
+
+#ifndef _PORT_AFTER_H_
+#define _PORT_AFTER_H_
+
+#define HAVE_SA_LEN		1
+#define HAS_INET6_STRUCTS	1
+#define HAVE_SIN6_SCOPE_ID	1
+#define HAVE_TIME_R		1
+
+#endif /* _PORT_AFTER_H_ */

freebsd/lib/libc/include/port_before.h

@@ -17,6 +17,6 @@
                 var = _u.v; \
         } while (0)
 
-#define UNUSED(x) (void)(x)
+#define UNUSED(x) (x) = (x)
 
 #endif /* _PORT_BEFORE_H_ */