$OpenBSD: patch-src_mbox_c,v 1.2 2003/07/04 13:06:13 wilfried Exp $
--- src/mbox.c.orig	Thu May 29 04:11:44 2003
+++ src/mbox.c	Thu May 29 04:11:58 2003
@@ -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) \
 { \
