tree 9033c9818b9cb543c373725d2be2ae567534ac91
parent 51acdc1a97f09ceb7eb0ca40f0ee796b553a5b4e
author chen xu <fionaxu@google.com> 1556771465 -0700
committer chen xu <fionaxu@google.com> 1556818045 -0700

do not unbind if the connection has been cleared already

It's possible that during the wait of bind/fetch complete,
the connection to carrier service has been cleared due to clear event e.g,
sim card status change. Then we should not unbind again when handling
bind/fetch timeout event to avoid NPE.

Bug: 131637624
Test: manual
Change-Id: Ie87d7270e7f1094601c97c5e992006d8dcaecb99