Fix out-of-range error when parsing certain files.

An example file that breaks on this is https://github.com/ajaxorg/ace-builds/blob/b2f8bf1e745250596afea5b39c70b94421af906d/kitchen-sink/demo.js#L1000
Fix syntax error in kuroir.css

This bad line was breaking my css parser.

Workaround in my code: https://github.com/creationix/tedit-app/blob/079741c477e40a51010ee87d57635b677afb68e1/src/applytheme.js#L66-L67
Merge pull request #1805 from creationix/master

Two tiny fixes I made while working on Tedit