$OpenBSD: patch-source_pipe_c,v 1.1 2010/11/17 08:54:39 dcoppa Exp $
--- source/pipe.c.orig	Wed Nov 17 09:47:10 2010
+++ source/pipe.c	Wed Nov 17 09:47:22 2010
@@ -40,7 +40,7 @@ FILE * openpipe(const char * cmd, pid_t * cpid) {
 		close(fd[1]);
 		dup2(fd[0], 0);
 
-		execl("/bin/sh", "sh", "-c", cmd, NULL);
+		execl("/bin/sh", "sh", "-c", cmd, (char *)NULL);
 	}
 
 	if(cpid != NULL)
