hg: kulla/dev/langtools: Fix ArrayIndexOutOfBoundsException on empty stack trace. Seen on stress test that cycles between StackOverflowError and OutOfMemoryError.

[robert.field at oracle.com]

Changeset: 759cb7863900
Author:    rfield
Date:      2015-03-25 19:23 -0700
URL:       http://hg.openjdk.java.net/kulla/dev/langtools/rev/759cb7863900

Fix ArrayIndexOutOfBoundsException on empty stack trace.  Seen on stress test that cycles between StackOverflowError and OutOfMemoryError.

! repl/src/impl/EvalStateImpl.java