Track tinyxml2 API change.

Bug: http://b/64459264
Test: builds
Change-Id: Ica24adee8874b28b793570e2cdf8f2b24d073287
diff --git a/parse_xml.cpp b/parse_xml.cpp
index 518faec..f773078 100644
--- a/parse_xml.cpp
+++ b/parse_xml.cpp
@@ -43,7 +43,7 @@
 // caller is responsible for deleteDocument() call
 inline DocType *createDocument(const std::string &xml) {
     DocType *doc = new tinyxml2::XMLDocument();
-    if (doc->Parse(xml.c_str()) == tinyxml2::XML_NO_ERROR) {
+    if (doc->Parse(xml.c_str()) == tinyxml2::XML_SUCCESS) {
         return doc;
     }
     delete doc;