Sync upstream-openbsd.

Change-Id: I5b9961a57e2ff05f63bd218c130bf8347850b9be
diff --git a/libc/upstream-openbsd/lib/libc/string/strlen.c b/libc/upstream-openbsd/lib/libc/string/strlen.c
index 12d9ec4..7e0e27b 100644
--- a/libc/upstream-openbsd/lib/libc/string/strlen.c
+++ b/libc/upstream-openbsd/lib/libc/string/strlen.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: strlen.c,v 1.7 2005/08/08 08:05:37 espie Exp $	*/
+/*	$OpenBSD: strlen.c,v 1.8 2014/06/10 04:17:37 deraadt Exp $	*/
 
 /*-
  * Copyright (c) 1990, 1993
@@ -29,11 +29,7 @@
  * SUCH DAMAGE.
  */
 
-#if !defined(_KERNEL) && !defined(_STANDALONE)
 #include <string.h>
-#else
-#include <lib/libkern/libkern.h>
-#endif
 
 size_t
 strlen(const char *str)