added reference cell printing

src/finiteVolume/cfdTools/general/findRefCell/findRefCell.C

@@ -92,6 +92,7 @@ void Foam::setRefCell
                     dict
                 )   << "Unable to set reference cell for field " << field.name()
                     << nl << "    Reference point " << refPointName
+                    << " " << refPointi
                     << " found on " << sumHasRef << " domains (should be one)"
                     << nl << exit(FatalIOError);
             }