Request for Approval: 804608 : inserting null key into HashMap treebin fails

[Mike Duigou]

Hello all;

This is a small but very high-priority (P2) fix from JDK9. The proposed patch applies cleanly to JDK8 (modulo line number change). The change has been baking in JDK 9 for about a week.

jbsbug: https://bugs.openjdk.java.net/browse/JDK-8046085
webrev: http://cr.openjdk.java.net/~mduigou/JDK-8046085/0/webrev/
changeset: http://hg.openjdk.java.net/jdk9/dev/jdk/rev/c9fe43f1cddb

Mike