hg: valhalla/valhalla: [lworld] Emit a warning on potential null pollution into value based instances

[srikanth.adayapalam at oracle.com]

Changeset: 9cefc46cf42a
Author:    sadayapalam
Date:      2018-04-23 11:42 +0530
URL:       http://hg.openjdk.java.net/valhalla/valhalla/rev/9cefc46cf42a

[lworld] Emit a warning on potential null pollution into value based instances

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties
! test/langtools/tools/javac/diags/examples.not-yet.txt
+ test/langtools/tools/javac/valhalla/lworld-values/NullPollutionTest.java
+ test/langtools/tools/javac/valhalla/lworld-values/NullPollutionTest.out