Use {} notation

lib/liquid/tags/cycle.rb

@@ -30,7 +30,7 @@ module Liquid
     end
 
     def render(context)
-      context.registers[:cycle] ||= Hash.new
+      context.registers[:cycle] ||= {}
 
       context.stack do
         key = context.evaluate(@name)

lib/liquid/tags/for.rb

@@ -120,7 +120,7 @@ module Liquid
     private
 
     def collection_segment(context)
-      offsets = context.registers[:for] ||= Hash.new
+      offsets = context.registers[:for] ||= {}
 
       from = if @from == :continue
         offsets[@name].to_i