From 70a3ec18d29c7fde9a5c06fe019b8bedef7acec8 Mon Sep 17 00:00:00 2001
From: Eric Wong <e@80x24.org>
Date: Sun, 26 Sep 2021 01:42:29 +0000
Subject: inbox: cloneurl: avoid undef to hash table value

This saves us some memory for the hash slot in the common case
the `cloneurl' file doesn't exist.
---
 lib/PublicInbox/Inbox.pm | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

(limited to 'lib/PublicInbox/Inbox.pm')

diff --git a/lib/PublicInbox/Inbox.pm b/lib/PublicInbox/Inbox.pm
index 3ba92c99..1d5fc708 100644
--- a/lib/PublicInbox/Inbox.pm
+++ b/lib/PublicInbox/Inbox.pm
@@ -216,11 +216,11 @@ sub description {
 
 sub cloneurl {
 	my ($self) = @_;
-	($self->{cloneurl} //= do {
+	$self->{cloneurl} // do {
 		my $s = try_cat("$self->{inboxdir}/cloneurl");
 		my @urls = split(/\s+/s, $s);
-		scalar(@urls) ? \@urls : undef
-	}) // [];
+		scalar(@urls) ? ($self->{cloneurl} = \@urls) : undef;
+	} // [];
 }
 
 sub base_url {
-- 
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