fix constant leak in sax parser

alib2common/src/sax/SaxParseInterface.cpp

@@ -26,6 +26,7 @@ void SaxParseInterface::parseMemory(const std::string& xmlIn, std::deque<Token>&
 	xmlFreeTextReader(reader);
 	xmlFreeParserInputBuffer(buf);
 	xmlCleanupCharEncodingHandlers();
+	xmlCleanupParser();
 	if (result != 0) {
 		throw exception::CommonException("Cannot parse the XML file " + xmlIn);
@@ -38,6 +39,8 @@ void SaxParseInterface::parseFile(const std::string& filename, std::deque<Token>
 	int result = SaxParseInterface::xmlSAXUserParse(reader, out);
 	xmlFreeTextReader(reader);
+	xmlCleanupCharEncodingHandlers();
+	xmlCleanupParser();
 	if (result != 0) {
 		throw exception::CommonException("Cannot parse the XML file " + filename);