From 25dd32219fc5f299d41a2036697e87b8b334b075 Mon Sep 17 00:00:00 2001
From: Akinori MUSHA <knu@idaemons.org>
Date: Mon, 15 Apr 2013 23:57:35 +0900
Subject: [PATCH] MozillaStore#close: Do not call SQLite3::Database#close if
 already closed.

---
 lib/http/cookie_jar/mozilla_store.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/http/cookie_jar/mozilla_store.rb b/lib/http/cookie_jar/mozilla_store.rb
index ffc02ec..7b6e325 100644
--- a/lib/http/cookie_jar/mozilla_store.rb
+++ b/lib/http/cookie_jar/mozilla_store.rb
@@ -73,7 +73,7 @@ class HTTP::CookieJar
     # Closes the SQLite3 database.  After closing, any operation may
     # raise an error.
     def close
-      @db.close
+      @db.closed? || @db.close
       self
     end