Belt-and-braces check

diff --git a/lib/ZOOM/IRSpy/Utils.pm b/lib/ZOOM/IRSpy/Utils.pm
index a59442b..de1e690 100644 (file)
--- a/lib/ZOOM/IRSpy/Utils.pm
+++ b/lib/ZOOM/IRSpy/Utils.pm
@@ -1,4 +1,4 @@
-# $Id: Utils.pm,v 1.35 2007-06-28 13:59:31 sondberg Exp $
+# $Id: Utils.pm,v 1.36 2007-09-20 10:12:19 mike Exp $
 
 package ZOOM::IRSpy::Utils;
 
@@ -205,6 +205,9 @@ sub irspy_identifier2target {
 sub _irspy_identifier2target {
     my($id) = @_;
 
+    confess "_irspy_identifier2target(): id is undefined"
+       if !defined $id;
+
     my($protocol, $target) = ($id =~ /(.*?):(.*)/);
     if (uc($protocol) eq "Z39.50") {
        return "tcp:$target";