On JDK 1.7_21 results in NPE - JDK 1.6_45 does not throw exception

gistfile1.java

import java.io.FileReader;

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamReader;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.stax.StAXSource;

import org.w3c.dom.Node;

public class SetVersionNPE {

    public static void main(final String[] args) throws Exception  {
        final XMLInputFactory xif = XMLInputFactory.newInstance();
        final XMLStreamReader xsr = xif.createXMLStreamReader(new FileReader("input.xml"));
        xsr.nextTag(); // Advance to statements element

        final TransformerFactory tf = TransformerFactory.newInstance();
        final Transformer t = tf.newTransformer();
        while(xsr.nextTag() == XMLStreamConstants.START_ELEMENT) {
            final DOMResult result = new DOMResult();
            t.transform(new StAXSource(xsr), result);
            final Node domNode = result.getNode();
            System.out.println(domNode);
        }
    }

}