hg: jdk9/sandbox/langtools: Minor fixes to MessageInfo test.

[andreas.lundblad at oracle.com]

Changeset: 16dd38200f1d
Author:    alundblad
Date:      2016-10-03 10:16 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/16dd38200f1d

Minor fixes to MessageInfo test.

! src/jdk.compiler/share/classes/com/sun/tools/javac/util/JavacContext.java
! test/tools/javac/diags/ArgTypeCompilerFactory.java
! test/tools/javac/diags/Example.java