Fix permanent cookie jar accessor typo

actionpack/lib/action_dispatch/middleware/cookies.rb

@@ -358,7 +358,7 @@ def initialize(parent_jar, key_generator, options = {})
       end
 
       def [](key)
-        @parent_jar[name.to_s]
+        @parent_jar[key.to_s]
       end
 
       def []=(key, options)

actionpack/test/dispatch/cookies_test.rb

@@ -349,12 +349,17 @@ def test_cookies_persist_throughout_request
     assert response.headers["Set-Cookie"] =~ /user_name=david/
   end
 
-  def test_permanent_cookie
+  def test_set_permanent_cookie
     get :set_permanent_cookie
     assert_match(/Jamie/, @response.headers["Set-Cookie"])
     assert_match(%r(#{20.years.from_now.utc.year}), @response.headers["Set-Cookie"])
   end
 
+  def test_read_permanent_cookie
+    get :set_permanent_cookie
+    assert_equal 'Jamie', @controller.send(:cookies).permanent[:user_name]
+  end
+
   def test_signed_cookie
     get :set_signed_cookie
     assert_equal 45, @controller.send(:cookies).signed[:user_id]