From 2b4bbe3857ab1a4dd194612018029c5511505cba Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Sun, 14 Aug 2016 10:21:12 +0000
Subject: view: allow for missing In-Reply-To mapping

Because buggy mail clients exist and generate invalid
In-Reply-To headers we cannot handle across the board...
---
 lib/PublicInbox/View.pm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/PublicInbox/View.pm b/lib/PublicInbox/View.pm
index ed3c96e8..373545a2 100644
--- a/lib/PublicInbox/View.pm
+++ b/lib/PublicInbox/View.pm
@@ -208,8 +208,8 @@ sub _th_index_lite {
 	my $nr_s = 0;
 	my $level = $map->[4];
 	my $idx = $map->[3];
-	if (defined $irt) {
-		my $irt_map = $mapping->{$irt};
+	my $irt_map = $mapping->{$irt} if defined $irt;
+	if (defined $irt_map) {
 		my $siblings = $irt_map->[0];
 		$nr_s = scalar(@$siblings) - 1;
 		$rv .= $pad . $irt_map->[1];
-- 
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