From d330db131e52ad0c62ffbf6e0df0568662813551 Mon Sep 17 00:00:00 2001
From: Alex Ling <hkalexling@gmail.com>
Date: Wed, 15 Sep 2021 08:46:30 +0000
Subject: [PATCH] Simplify `mark_unavailable`

---
 src/storage.cr | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/src/storage.cr b/src/storage.cr
index 9f6f45b..762946d 100644
--- a/src/storage.cr
+++ b/src/storage.cr
@@ -428,15 +428,11 @@ class Storage
     end
   end
 
-  def mark_unavailable
-    mark_unavailable nil, nil
-  end
-
   # Limit mark targets with given arguments
   # They should be checked again if they are really gone,
   #   since they would be available which are renamed or moved
-  def mark_unavailable(ids_candidates : Array(String) | Nil,
-                       titles_candidates : Array(String) | Nil)
+  def mark_unavailable(ids_candidates : Array(String)?,
+                       titles_candidates : Array(String)?)
     MainFiber.run do
       get_db do |db|
         # Detect dangling entry IDs