[10] RFR 8179086: java.time.temporal.ValueRange has poor hashCode()

[Ivan Gerasimov]

Hello!

It was noticed that ValueRange.hashCode() returns zero for many values.
This is due to lack of some parentheses to set correct precedence.

Would you please help review the trivial fix?

BUGURL: https://bugs.openjdk.java.net/browse/JDK-8179086
WEBREV: http://cr.openjdk.java.net/~igerasim/8179086/00/webrev/

The fix is applicable to jdk 9, but I'm not sure it's that critical.
We can later backport it to an update release.

-- 
With kind regards,
Ivan Gerasimov