circular array with one element and circular array with two elements don't behave the same

[nkh]

use strict ; use warnings ; use v5.10 ;

use Array::Iterator::Circular;

my $chars = Array::Iterator::Circular->new('-', '-');

say $chars->next for (1 ..10 ) ;

$chars = Array::Iterator::Circular->new('-');

say $chars->next for (1 ..10 ) ;