$OpenBSD: patch-rand_fastrand_h,v 1.1 2015/11/20 10:09:52 sthen Exp $
--- rand/fastrand.h.orig	Wed Oct 21 00:27:08 2015
+++ rand/fastrand.h	Wed Oct 21 00:27:38 2015
@@ -22,9 +22,10 @@
 #ifndef _fastrand_h
 #define _fastrand_h
 
-
+#ifndef HAVE_ARC4RANDOM
 /* side effect: seeds also random w/ seed */
 void fastrand_seed(unsigned int seed);
+#endif
 /* generate a 32 bit random number */
 unsigned int fastrand(void);
 /* generate a random number between 0 and max inclusive ( 0 <= r <= max)
