Core-Techs/Logging — pull request #1 by Zshazz (2014-12-05 03:50:38+00:00)
Title: Fix NPE when FileTarget hasn't been used

If a file target is never written to (for example, if the FileTarget has
been set to a level that hasn't been logged to), _logFile will be null
on dispose. This can interrupt other Targets' disposing.