Add pre-assert, fix comment
diff --git a/tinyxml2.h b/tinyxml2.h
index 2c9c155..5940509 100755
--- a/tinyxml2.h
+++ b/tinyxml2.h
@@ -491,7 +491,7 @@
     }

 };

 

-// WARNING: must match XMLErrorNames[]

+// WARNING: must match XMLDocument::_errorNames[]

 enum XMLError {

     XML_SUCCESS = 0,

     XML_NO_ERROR = 0,