Fixes recursion bug in disambiguate_in().

[ohcount] / test / src_dir / haml.haml

%p
%p= "stuff"
/ oneliner!
%p
/
  %p this won't render
  %p it is a comment!
%p= "stuff"
%p
  - code
%p= "stuff"
%p

\- not script!
-# silent comment
%p
-#
  silent
  comment
%br/