dart-lang/spark — pull request #911 by devoncarew (2014-01-30 03:04:30+00:00)
Title: fix an issue w/ exceptions when traversing the list of editors

TBR @dinhviethoa, fix an issue where a `null` editor would be in the editor map, and traversing the list of editors would cause an NPE.

This would cause dart files to not analyze after a series of opening and closing files.