Merge "Fixed ScriptGroup finalizer for old API" into nyc-dev

    protected void finalize() throws Throwable {

        // Clear out the list mClosures to avoid double-destroying the closures,

        // in case their finalizers race ahead.

        if (mClosures != null) {

            // ScriptGroup created using the old Builder class does not

            // initialize the field mClosures

            mClosures.clear();

        }

        super.finalize();

    }

}