fix bug in yydebug removal code which wouldn't work as expected when run in the demo webpages: the old regex didn't pick up the proper closing `}` in the code    :-S
fix bug in yydebug removal code which wouldn't work as expected when run in the demo webpages: the old regex didn't pick up the proper closing `}` in the code    :-S

GerHobbelt/jison,GerHobbelt/jison,GerHobbelt/jison,GerHobbelt/jison