fix uninitialized class variable error when nokogiri is used as handler

[abrandoned]

when nokogiri is chosen as the handler @@handler is uninitialized

[krasnoukhov]

Thanks. How do I reproduce that? There is some code below that sets the initial handler, which is supposed to set @@handler.

[abrandoned]

if you allow it to use nokogiri on requiring sax-machine it will throw the exception

the code below does try to initialize it, but on access of a class instance variable it will raise the uninitialized class variable exception as the first access does not initialize it

[krasnoukhov]

Got it. Thank you!