BufferQueue: fix a test crash

                mConnectedApi = api;

                output->inflate(mDefaultWidth, mDefaultHeight, mTransformHint, mQueue.size());

                // set-up a death notification so that we can disconnect automatically

                // when/if the remote producer dies.

                // This will fail with INVALID_OPERATION if the "token" is local to our process.

                if (token->linkToDeath(static_cast<IBinder::DeathRecipient*>(this)) == NO_ERROR) {

                // set-up a death notification so that we can disconnect

                // automatically when/if the remote producer dies.

                if (token != NULL && token->remoteBinder() != NULL) {

                    status_t err = token->linkToDeath(static_cast<IBinder::DeathRecipient*>(this));

                    if (err == NO_ERROR) {

                        mConnectedProducerToken = token;

                    } else {

                        ALOGE("linkToDeath failed: %s (%d)", strerror(-err), err);

                    }

                }

            }

            break;