Merge "Simplify removeNotificationClient"

{

    Mutex::Autolock _l(mLock);

    ssize_t index = mNotificationClients.indexOfKey(pid);

    if (index >= 0) {

        sp <NotificationClient> client = mNotificationClients.valueFor(pid);

        ALOGV("removeNotificationClient() %p, pid %d", client.get(), pid);

    mNotificationClients.removeItem(pid);

    }

    ALOGV("%d died, releasing its sessions", pid);

    size_t num = mAudioSessionRefs.size();