aspnet/KRuntime — pull request #764 by shhsu (2014-10-16 00:16:19+00:00)
Title: Ignore null error messages.

Synced with @glennc

We should follow the example code http://msdn.microsoft.com/en-us/library/system.diagnostics.process.errordatareceived(v=vs.110).aspx and check for dummy error data event