hg: javadoc-next/new-api/langtools: Activated one more test, for whatever its worth.

[kumar.x.srinivasan at oracle.com]

Changeset: 7960a65bfe86
Author:    ksrini
Date:      2015-09-18 08:24 -0700
URL:       http://hg.openjdk.java.net/javadoc-next/new-api/langtools/rev/7960a65bfe86

Activated one more test, for whatever its worth.

! test/jdk/javadoc/tool/completionFailure/CompletionFailure.java