hg: jdk/sandbox: http-client-branch: add more diagnosis to detachChannel

[daniel.fuchs at oracle.com]

Changeset: 9027d1747dd0
Author:    dfuchs
Date:      2018-03-14 14:32 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/9027d1747dd0

http-client-branch: add more diagnosis to detachChannel

! src/java.net.http/share/classes/jdk/internal/net/http/HttpClientImpl.java
! src/java.net.http/share/classes/jdk/internal/net/http/SocketTube.java