GSLMultiMinimizerItem: move out ComboProperty

GUI/Model/Job/MinimizerItem.cpp

@@ -287,7 +287,8 @@ ValueDescriptors MinuitMinimizerItem::valueDescriptorsForUI() const
 GSLMultiMinimizerItem::GSLMultiMinimizerItem()
     : MinimizerItem(M_TYPE)
 {
-    addProperty(P_ALGORITHMS, MinimizerItemCatalog::algorithmCombo(modelType()).variant());
+    ComboProperty algo = MinimizerItemCatalog::algorithmCombo(modelType());
+    addProperty(P_ALGORITHMS, algo.variant());
     addProperty(P_MAXITERATIONS, int(0))->setToolTip("Maximum number of iterations");
 }