BUG: output field name instead of field (fixes #224)

src/postProcessing/functionObjects/utilities/ddt2/ddt2.C

@@ -165,7 +165,7 @@ int Foam::ddt2::apply
     {
         // could add additional statistics here
         Info<< type() << " " << name_
-            << " field " << output
+            << " field " << outputName
             << " average: " << gAverage(output) << endl;
     }