fix for compiler warning; thanks to Jeff Rodriguez for pointing this out

git-svn-id: https://svn.apache.org/repos/asf/xerces/c/trunk@174980 13f79535-47bb-0310-9956-ffa450edef68

src/xercesc/dom/impl/DOMNormalizer.cpp

@@ -203,7 +203,7 @@ DOMNode * DOMNormalizer::normalizeNode(DOMNode *node) const {
         else {
             //this is done in namespace fixup so no need to do it if namespace is on 
             if(attrMap) {
-                for(int i = 0; i < attrMap->getLength(); i++) {
+                for(XMLSize_t i = 0; i < attrMap->getLength(); i++) {
                     attrMap->item(i)->normalize();
                 }
             }