pt.rb in valvat-1.1.0

- old
+ new

@@ -1,10 +1,12 @@
+# frozen_string_literal: true
+
 class Valvat
   module Checksum
     class PT < Base
       def check_digit
         chk = sum_of_figues_for_pt_si
         chk > 9 ? 0 : chk
       end
     end
   end
-end
\ No newline at end of file
+end