pic_length is now unsafe to circular list
pic_length is now unsafe to circular list

leavesbnw/picrin,omasanori/picrin,picrin-scheme/picrin,omasanori/picrin,leavesbnw/picrin,ktakashi/picrin,dcurrie/picrin,koba-e964/picrin,ktakashi/picrin,leavesbnw/picrin,koba-e964/picrin,ktakashi/picrin,dcurrie/picrin,picrin-scheme/picrin,koba-e964/picrin