From 8577beb9a851bc51d33122af05ac79690fd0ce0c Mon Sep 17 00:00:00 2001
From: djfiander <djfiander>
Date: Thu, 4 May 2006 01:21:42 +0000
Subject: [PATCH] '0' is a valid sequence number (it comes after '9'), so we
 have to see if the sequence number is set, not just if it's true.

---
 Sip.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Sip.pm b/Sip.pm
index a42b270..36a0f53 100644
--- a/Sip.pm
+++ b/Sip.pm
@@ -140,7 +140,7 @@ sub write_msg {
     my $cksum;
 
     if ($error_detection) {
-	if ($self->{seqno}) {
+	if (defined($self->{seqno})) {
 	    $msg .= 'AY' . $self->{seqno};
 	}
 	$msg .= 'AZ';
-- 
2.11.0