Bug 676544 - fails to build with --without-sax1

Added some ifdef'd LIBXML_SAX1_ENABLED to make it buildable with
--without-sax1 configure option.
diff --git a/testXPath.c b/testXPath.c
index 677419a..8b8efd4 100644
--- a/testXPath.c
+++ b/testXPath.c
@@ -172,10 +172,12 @@
     xmlLoadExtDtdDefaultValue |= XML_DETECT_IDS;
     xmlLoadExtDtdDefaultValue |= XML_COMPLETE_ATTRS;
     xmlSubstituteEntitiesDefaultValue = 1;
+#ifdef LIBXML_SAX1_ENABLED
     if (nocdata != 0) {
 	xmlDefaultSAXHandlerInit();
 	xmlDefaultSAXHandler.cdataBlock = NULL;
     }
+#endif
     if (document == NULL) {
         if (filename == NULL)
 	    document = xmlReadDoc(buffer,NULL,NULL,XML_PARSE_COMPACT);