lib/timezone/lookup.rb in timezone-1.3.25 vs lib/timezone/lookup.rb in timezone-1.3.26

@@ -2,16 +2,17 @@
 
 require 'timezone/lookup/geonames'
 require 'timezone/lookup/google'
 require 'timezone/lookup/test'
 require 'timezone/net_http_client'
+require 'ostruct'
 
 module Timezone
   # Configure timezone lookups.
   module Lookup
     class << self
-      MISSING_LOOKUP = 'No lookup configured'.freeze
+      MISSING_LOOKUP = 'No lookup configured'
       private_constant :MISSING_LOOKUP
 
       # Returns the lookup object
       #
       # @return [#lookup] the lookup object
@@ -43,10 +44,10 @@
         geonames: ::Timezone::Lookup::Geonames,
         google: ::Timezone::Lookup::Google,
         test: ::Timezone::Lookup::Test
       }.freeze
 
-      INVALID_LOOKUP = 'Invalid lookup specified'.freeze
+      INVALID_LOOKUP = 'Invalid lookup specified'
 
       attr_reader :config
 
       def initialize(lookup)
         if lookup.is_a?(Symbol)