hg: jdk/sandbox: 8233430: (sc) Socket adaptor restoring of blocking mode can override exception if socket closed

[chris.hegarty at oracle.com]

Changeset: 434329f6f456
Author:    alanb
Date:      2019-11-03 14:07 +0000
URL:       https://hg.openjdk.java.net/jdk/sandbox/rev/434329f6f456

8233430: (sc) Socket adaptor restoring of blocking mode can override exception if socket closed
Reviewed-by: dfuchs, chegar

! src/java.base/share/classes/sun/nio/ch/DummySocketImpl.java
! src/java.base/share/classes/sun/nio/ch/ServerSocketChannelImpl.java
! src/java.base/share/classes/sun/nio/ch/SocketChannelImpl.java