fix compile error

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1812531 13f79535-47bb-0310-9956-ffa450edef68

src/ooxml/java/org/apache/poi/xssf/extractor/XSSFExportToXml.java

@@ -485,7 +485,8 @@ public class XSSFExportToXml implements Comparator<String>{
         NodeList  list  = localComplexTypeRootNode.getChildNodes();
         String complexTypeName = "";
 
-        for(final Node node : list) {
+        for(int i=0; i<list.getLength(); i++) {
+            final Node node = list.item(i);
             if ( node instanceof Element && "element".equals(node.getLocalName())) {
                 Node nameAttribute = getNameOrRefElement(node);
                 if (nameAttribute.getNodeValue().equals(elementNameWithoutNamespace)) {