Correct some bugs about lexical scope variables.
Correct some bugs about lexical scope variables.

informatimago/lisp,GitoriousLispBackup/com-informatimago,GitoriousLispBackup/com-informatimago,GitoriousLispBackup/com-informatimago,informatimago/lisp,informatimago/lisp,informatimago/lisp,GitoriousLispBackup/com-informatimago,informatimago/lisp,GitoriousLispBackup/com-informatimago,GitoriousLispBackup/com-informatimago,informatimago/lisp,informatimago/lisp