[8u20] backport request 8039776: Introspector throws NullPointerException for subclasses' mismatched get/setter

[sergey malenkov]

Hello,

The following issue is a regression untroduced in JDK 8:
http://bugs.openjdk.java.net/browse/JDK-8039776

The fix is very simple and does not differ from JDK 9:
http://cr.openjdk.java.net/~malenkov/8039776.8.0/
http://cr.openjdk.java.net/~malenkov/8039776.9.0/

Thanks,
SAM