Fix `ActiveSupport::Reloader.check!`

The test failure in `bug_report_templates/action_controller_master.rb`
is due to `app.reloader.check` is `nil`.

1 files changed, 3 insertions, 4 deletions

diff --git a/activesupport/lib/active_support/reloader.rb b/activesupport/lib/active_support/reloader.rb
index 639b987ba8..d88fcbcf78 100644
--- a/activesupport/lib/active_support/reloader.rb
+++ b/activesupport/lib/active_support/reloader.rb
@@ -65,10 +65,9 @@ module ActiveSupport
       end
     end
 
-    class << self
-      attr_accessor :executor
-      attr_accessor :check
-    end
+    class_attribute :executor
+    class_attribute :check
+
     self.executor = Executor
     self.check = lambda { false }