$OpenBSD: patch-filter_c,v 1.3 2005/09/14 21:00:03 bernd Exp $
--- filter.c.orig	Thu Feb  3 19:47:52 2005
+++ filter.c	Fri Aug 12 09:21:37 2005
@@ -117,7 +117,7 @@ mutt_create_filter_fd (const char *cmd, 
       close (fderr);
     }
 
-    execl (EXECSHELL, "sh", "-c", cmd, NULL);
+    execl (EXECSHELL, "sh", "-c", cmd, (void *)NULL);
     _exit (127);
   }
   else if (thepid == -1)
