[11u] RFR(M): 8214206: Fix for JDK-8213419 is broken on 32-bit

[Roland Westrelin]

I'd like to backport this fix to 11u but the patch doesn't apply cleanly
some I'm requesting a new review.

http://cr.openjdk.java.net/~roland/8214206.11u/webrev.00/

jdk 12 fix:
https://bugs.openjdk.java.net/browse/JDK-8214206
http://hg.openjdk.java.net/jdk/jdk/rev/7d3cde494494

Roland.