hg: jdk/sandbox: 8234781: Update description of InvalidClassException to include more conditions

[chris.hegarty at oracle.com]

Changeset: 8b6cc0bb93d0
Author:    darcy
Date:      2019-11-27 06:36 -0800
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/8b6cc0bb93d0

8234781: Update description of InvalidClassException to include more conditions
Reviewed-by: alanb, chegar

! src/java.base/share/classes/java/io/InvalidClassException.java