hg: amber/amber: Automatic merge with sealed-types

[maurizio.cimadamore at oracle.com]

Changeset: 01e18578f527
Author:    mcimadamore
Date:      2020-02-26 01:00 +0000
URL:       https://hg.openjdk.java.net/amber/amber/rev/01e18578f527

Automatic merge with sealed-types

! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TypeEnter.java