lib/new_relic/rack.rb in newrelic_rpm-8.9.0 vs lib/new_relic/rack.rb in newrelic_rpm-8.10.0

@@ -1,7 +1,8 @@
 # encoding: utf-8
 # This file is distributed under New Relic's license terms.
 # See https://github.com/newrelic/newrelic-ruby-agent/blob/main/LICENSE for complete details.
+# frozen_string_literal: true
 
 # @api public
 module NewRelic
   # This module contains Rack middlewares used by the Ruby agent.
   #