$NetBSD: patch-ai,v 1.1 2007/01/24 10:25:15 sborrill Exp $

--- htnotify/htnotify.cc.orig	2002-01-31 23:47:18.000000000 +0000
+++ htnotify/htnotify.cc	2007-01-24 09:50:09.000000000 +0000
@@ -185,7 +185,7 @@
     // define default preamble text - blank string
     preambleText = "";
 
-    if (prefixfile != NULL)
+    if (prefixfile != NULL && prefixfile[0] != 0)
     {
         ifstream    in(prefixfile);
         char        buffer[1024];
@@ -212,7 +212,7 @@
     postambleText << "    http://www.htdig.org/meta.html\n\n";
     postambleText << "Cheers!\n\nht://Dig Notification Service\n";
 
-    if (suffixfile != NULL)
+    if (suffixfile != NULL && suffixfile[0] != 0)
     {
         ifstream    in(suffixfile);
         char        buffer[1024];