Frameworks: AudioFlinger: Fix effects memory leak

    loadEffects(root, effects);

    loadInputSources(root, effects);

    // delete effects to fix memory leak.

    // as effects is local var and valgrind would treat this as memory leak

    // and although it only did in mediaserver init, but free it in case mediaserver reboot

    size_t i;

    for (i = 0; i < effects.size(); i++) {

      delete effects[i];

    }

    config_free(root);

    free(root);

    free(data);