Fix the last commit

lib/shotengai/harray.rb

@@ -35,7 +35,7 @@ module Shotengai
     end
 
     def values_at *keys
-      self.reduce([]) { |output, obj| output << obj.last if obj.first.in?(keys) }
+      self.reduce([]) { |output, obj| output << obj.last if obj.first.in?(keys); output }
     end
 
     def decode