[bugfix] macroexpand
[bugfix] macroexpand

macroexpand restores pic->lib in the case of an error

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