Review

Node.getNextSibling() may return a null value.

• missing/condition/null_check

com/itextpdf/text/pdf/XfaForm.java

createDatasetsNode(Node)

class XfaForm {
    /**
     * Some XFA forms don't have a datasets node.
     * If this is the case, we have to add one.
     */
    private void createDatasetsNode(Node n) {
    	while (n.getChildNodes().getLength() == 0) {
    		n = n.getNextSibling();
    	}
    	if (n != null) {
            Element e = n.getOwnerDocument().createElement("xfa:datasets");
            e.setAttribute("xmlns:xfa", XFA_DATA_SCHEMA);
            datasetsNode = e;
            n.appendChild(datasetsNode);
    	}
    }

}