From: Eric Wong <e@80x24.org>
Date: Wed, 15 Jun 2016 01:36:40 +0000 (+0000)
Subject: unsubscribe: archive_url may be undefined
X-Git-Tag: v1.0.0~439
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=e048c8dfb947b0e1c04febac48275ef3876ed1e6;p=public-inbox.git

unsubscribe: archive_url may be undefined

We'll show a nasty warning in the UI instead of triggering
a perl warning about an undefined variable.
---

diff --git a/lib/PublicInbox/Unsubscribe.pm b/lib/PublicInbox/Unsubscribe.pm
index 239feea9..79234aa1 100644
--- a/lib/PublicInbox/Unsubscribe.pm
+++ b/lib/PublicInbox/Unsubscribe.pm
@@ -158,7 +158,7 @@ sub archive_info {
 	}
 
 	# protocol-relative URL:  "//example.com/" => "https://example.com/"
-	if ($archive_url =~ m!\A//!) {
+	if ($archive_url && $archive_url =~ m!\A//!) {
 		$archive_url = "$env->{'psgi.url_scheme'}:$archive_url";
 	}