added a fix for a fix for an odd Ruby 1.9-only bug
added a fix for a fix for an odd Ruby 1.9-only bug

--HG--
extra : convert_revision : svn%3A177060d3-6165-4ab0-95eb-642399a075a8/nanoc/trunk%40644

remko/nanoc,barraq/nanoc,nanoc/nanoc,gjtorikian/nanoc,legallybrown/nanoc,hilohiro/nanoc,RubenVerborgh/nanoc