Fixed typos in comments. There are no functional changes intended.
diff --git a/xmltest.cpp b/xmltest.cpp
index a7dbc25..da977d5 100644
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -1967,7 +1967,7 @@
     {

 	    // No matter - before or after successfully parsing a text -

 	    // calling XMLDocument::Value() used to cause an assert in debug.

-	    // Null must be retured.

+	    // Null must be returned.

 	    const char* validXml = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>"

 	                           "<first />"

 	                           "<second />";