Unexpected value in Lazy Evaluation exercise

[dicody]

Dear Team,

One of the exercises in Lazy Evaluation section returns odd result:

Same function in tests:

class LazyEvaluationSpec extends RefSpec with Checkers {

  def `check lazy list range`(): Unit =
    check(Test.testSuccess(LazyEvaluation.llRangeExercise _, 3 :: HNil)