hg: jdk/sandbox: http-client-branch: (WebSocket) autopong on a closed channel is not an error + test

[pavel.rappo at oracle.com]

Changeset: cf43d0ee8959
Author:    prappo
Date:      2018-03-19 21:04 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/cf43d0ee8959

http-client-branch: (WebSocket) autopong on a closed channel is not an error + test

! src/java.net.http/share/classes/jdk/internal/net/http/websocket/WebSocketImpl.java
+ test/jdk/java/net/httpclient/websocket/AutomaticPong.java
! test/jdk/java/net/httpclient/websocket/WebSocketTest.java