hg: jdk9/sandbox/langtools: 8167320: Trying to document only java.base causes a NPE in javac

[chris.hegarty at oracle.com]

Changeset: fe8352e43bdb
Author:    jlahoda
Date:      2016-10-11 10:31 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/fe8352e43bdb

8167320: Trying to document only java.base causes a NPE in javac
Summary: Ensure ModuleSymbol.getDirectives completes the Symbol
Reviewed-by: ksrini, jjg

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java
! test/tools/javac/modules/EdgeCases.java