$OpenBSD: patch-src_flow-capture_c,v 1.1 2002/12/28 23:29:13 pvalchev Exp $
--- src/flow-capture.c.orig	Sat Dec 28 14:49:14 2002
+++ src/flow-capture.c	Sat Dec 28 14:49:27 2002
@@ -1156,7 +1156,7 @@ skip_pdu_decode:
           } else if (!n) { /* child */
 
             n = execl(post_rotate_exec, post_rotate_exec, cap_file.nname,
-                NULL);
+                (void *)NULL);
 
             if (n == -1) 
               fterr_err(1, "exec(%s)", post_rotate_exec);