use it

Sim/Fitting/SimDataPair.cpp

@@ -35,7 +35,7 @@ namespace {
 
 std::unique_ptr<Datafield> initUserWeights(const Datafield& shape, double value)
 {
-    auto result = std::make_unique<Datafield>(shape.frame().clonedAxes());
+    auto result = std::make_unique<Datafield>(shape.frame().clone());
     result->setAllTo(value);
     return result;
 }