$OpenBSD: patch-src_mbox_c,v 1.3 2005/04/12 20:29:26 naddy Exp $
--- src/mbox.c.orig	Sun Apr  3 15:16:22 2005
+++ src/mbox.c	Sun Apr  3 15:16:39 2005
@@ -42,7 +42,9 @@
 #include "utils.h"
 #include "filtering.h"
 
-#define MSGBUFSIZE	8192
+#ifndef MSGBUFSIZE
+#  define MSGBUFSIZE	8192
+#endif
 
 #define FPUTS_TO_TMP_ABORT_IF_FAIL(s) \
 { \