--- error.h.orig  1998-06-15
+++ error.h       2007-03-21
--- .././qmail-1.03/error.h	Mon Jun 15 12:53:16 1998
+++ ../qmail-1.03.2418/error.h	Sun Jan 15 16:13:17 2006
@@ -16,6 +16,7 @@
 extern int error_pipe;
 extern int error_perm;
 extern int error_acces;
+extern int error_proto;
 
 extern char *error_str();
 extern int error_temp();