$OpenBSD: patch-system_c,v 1.2 2007/06/15 19:01:07 kili Exp $
--- system.c.orig	Wed May 23 03:17:54 2007
+++ system.c	Mon May 28 19:10:48 2007
@@ -110,7 +110,7 @@ int _mutt_system (const char *cmd, int flags)
     sigaction (SIGTSTP, &act, NULL);
     sigaction (SIGCONT, &act, NULL);
 
-    execl (EXECSHELL, "sh", "-c", cmd, NULL);
+    execl (EXECSHELL, "sh", "-c", cmd, (void *)NULL);
     _exit (127); /* execl error */
   }
   else if (thepid != -1)