`respond_to_missing?` should be private

Follow up of 03d3f036.

Some of `respond_to?` were replaced to `respond_to_missing?` in 03d3f036.
But the visibility is still public. It should be private.

1 files changed, 4 insertions, 4 deletions

diff --git a/railties/lib/rails/railtie.rb b/railties/lib/rails/railtie.rb
index 474118c0a9..3476bb0eb5 100644
--- a/railties/lib/rails/railtie.rb
+++ b/railties/lib/rails/railtie.rb
@@ -162,10 +162,6 @@ module Rails
         @instance ||= new
       end
 
-      def respond_to_missing?(*args)
-        instance.respond_to?(*args) || super
-      end
-
       # Allows you to configure the railtie. This is the same method seen in
       # Railtie::Configurable, but this module is no longer required for all
       # subclasses of Railtie so we provide the class method here.
@@ -178,6 +174,10 @@ module Rails
           ActiveSupport::Inflector.underscore(string).tr("/", "_")
         end
 
+        def respond_to_missing?(name, _)
+          instance.respond_to?(name) || super
+        end
+
         # If the class method does not have a method, then send the method call
         # to the Railtie instance.
         def method_missing(name, *args, &block)