scala/scala — pull request #2588 by retronym (2013-05-23 19:35:12+00:00)
Title: SI-7509 Avoid crasher as erronous args flow through NamesDefaults

The fix for SI-7238 caused this regression.

This commit marks taints whole Apply with an ErrorType if it
has an erroneous argument, so as to stop a later crash trying
to further process the tree.

Review by @lrytz