hg: jdk9/sandbox/langtools: 8157528: jdk/jshell/ExecutionControlTest.java failed intermittently with NPE

[chris.hegarty at oracle.com]

Changeset: dec94c8de74e
Author:    rfield
Date:      2016-05-23 13:05 -0700
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/dec94c8de74e

8157528: jdk/jshell/ExecutionControlTest.java failed intermittently with NPE
Reviewed-by: jlahoda

! test/jdk/jshell/LocalExecutionControl.java