[bugfix] compiling big library faults with arena overflow
[bugfix] compiling big library faults with arena overflow

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