hg: jdk9/dev/langtools: 8175886: JShell: crash on tab-complete with NPE.

[robert.field at oracle.com]

Changeset: f1d046e33386
Author:    rfield
Date:      2017-03-03 10:58 -0800
URL:       http://hg.openjdk.java.net/jdk9/dev/langtools/rev/f1d046e33386

8175886: JShell: crash on tab-complete with NPE.
Reviewed-by: jlahoda

! src/jdk.jshell/share/classes/jdk/jshell/SourceCodeAnalysisImpl.java
! test/jdk/jshell/CompletionSuggestionTest.java