[test] fix GH #335 test todo, parser error on new INTVAL
[test] fix GH #335 test todo, parser error on new INTVAL

Since INTVAL is a valid label name, and we do not want to scan down to look for all
existing labels, we just test for the existing error.

parrot/parrot,parrot/parrot,tkob/parrot,FROGGS/parrot,youprofit/parrot,parrot/parrot,parrot/parrot,tkob/parrot,FROGGS/parrot,FROGGS/parrot,tkob/parrot,youprofit/parrot,tkob/parrot,FROGGS/parrot,youprofit/parrot,FROGGS/parrot,FROGGS/parrot,tkob/parrot,youprofit/parrot,youprofit/parrot,tkob/parrot,tkob/parrot,parrot/parrot,youprofit/parrot,youprofit/parrot,FROGGS/parrot,FROGGS/parrot,tkob/parrot,youprofit/parrot