./lib/le/host/http.rb in le-2.2.8 vs ./lib/le/host/http.rb in le-2.2.9

@@ -199,10 +199,10 @@
         closeConnection
       end
 
       private
         def random_message_id
-          @random_message_id_sample_space ||= ('0'..'9').to_a + ('A'..'Z').to_a
+          @random_message_id_sample_space ||= ('0'..'9').to_a.concat(('A'..'Z').to_a)
           (0..5).map{ @random_message_id_sample_space.sample }.join
         end
     end
   end
 end