Fix bug causing errors to fail to propagate from OpenStream requests.
Fix bug causing errors to fail to propagate from OpenStream requests.

Change-Id: I8a3f203c4b5719634c0a692de9baa533b804d5a7
Reviewed-on: http://review.couchbase.org/55670
Reviewed-by: Mark Nunberg <dab05a0fe859c5cb93882b2a75a0d613501b07be@couchbase.com>
Reviewed-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>
Tested-by: Brett Lawson <c8c4369773d7d7226e031f0c4af62e3f38a08510@gmail.com>

brett19/gocb