Fix layout lookup for anonymous controller

actionpack/lib/abstract_controller/layouts.rb

@@ -280,6 +280,10 @@ def _write_layout_method
           <<-RUBY
             lookup_context.find_all("#{_implied_layout_name}", #{prefixes.inspect}).first || super
           RUBY
+        else
+          <<-RUBY
+            super
+          RUBY
         end
 
         layout_definition = case _layout

actionpack/test/abstract/layouts_test.rb

@@ -299,6 +299,18 @@ class ::BadFailLayout < AbstractControllerTests::Layouts::Base
         controller.process(:index)
         assert_equal "Overwrite Hello index!", controller.response_body
       end
+
+      test "layout for anonymous controller" do
+        klass = Class.new(WithString) do
+          def index
+            render :text => 'index', :layout => true
+          end
+        end
+
+        controller = klass.new
+        controller.process(:index)
+        assert_equal "With String index", controller.response_body
+      end
     end
   end
 end