Merge pull request #613 from Dmitry-Me/testResultOfSetError

Test SetError() has effect
diff --git a/xmltest.cpp b/xmltest.cpp
index ca8995d..59724f7 100644
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -1909,7 +1909,8 @@
 

     {

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

-	    // calling XMLDocument::Value() causes an assert in debug.

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

+	    // Null must be retured.

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

 	                           "<first />"

 	                           "<second />";