[bugfix] local variables should be initialized before copied to env object
[bugfix] local variables should be initialized before copied to env object

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