[bugfix] allocate size was inefficient
[bugfix] allocate size was inefficient

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