From f8fe394e7a03edacb06c336b3990d6e488336361 Mon Sep 17 00:00:00 2001
From: ThibG <thib@sitedethib.com>
Date: Sun, 11 Jun 2017 22:53:12 +0200
Subject: [PATCH] Fix an error when TagManager.local_url? is called with a bad
 URI (#3701)

TagManager.local_url? was sometimes called with an URI with a nil host,
leading to a crash in TagManager.local_url?. This fixes moves the
already-existing uri.host.blank? check in front to avoid this case.
---
 app/services/fetch_link_card_service.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/services/fetch_link_card_service.rb b/app/services/fetch_link_card_service.rb
index ec9b5226e8..c2df7b2f01 100644
--- a/app/services/fetch_link_card_service.rb
+++ b/app/services/fetch_link_card_service.rb
@@ -36,7 +36,7 @@ class FetchLinkCardService < BaseService
 
   def bad_url?(uri)
     # Avoid local instance URLs and invalid URLs
-    TagManager.instance.local_url?(uri.to_s) || !%w(http https).include?(uri.scheme) || uri.host.blank?
+    uri.host.blank? || TagManager.instance.local_url?(uri.to_s) || !%w(http https).include?(uri.scheme)
   end
 
   def skip_link?(a)
-- 
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