Latest commit 604439c Oct 19, 2016 @takeshik takeshik Fix NullReferenceException error for pathless files
When the new VS Text Editor is opened with some special output
(e.g. Stack Trace Explorer in ReSharper), it has no path, so the
argument `path` is null, and NullReferenceException is thrown in
parser.Parse(string). So null-check must be needed.