mark unused enums
diff --git a/tinyxml2.h b/tinyxml2.h
index bc15704..2b80a37 100755
--- a/tinyxml2.h
+++ b/tinyxml2.h
@@ -513,10 +513,10 @@
XML_ERROR_FILE_NOT_FOUND,
XML_ERROR_FILE_COULD_NOT_BE_OPENED,
XML_ERROR_FILE_READ_ERROR,
- XML_ERROR_ELEMENT_MISMATCH,
+ UNUSED_XML_ERROR_ELEMENT_MISMATCH, // remove at next major version
XML_ERROR_PARSING_ELEMENT,
XML_ERROR_PARSING_ATTRIBUTE,
- XML_ERROR_IDENTIFYING_TAG,
+ UNUSED_XML_ERROR_IDENTIFYING_TAG, // remove at next major version
XML_ERROR_PARSING_TEXT,
XML_ERROR_PARSING_CDATA,
XML_ERROR_PARSING_COMMENT,