FieldFactory::reInit: std::move result.

src/field_factory.inl

@@ -66,10 +66,10 @@ inline Field_t FieldFactory::reInit(Field_t& field, const CdoVar& var) {
       return FieldFactory::init(var);
   } else if (var.memType == MemType::Double &&  std::holds_alternative<FieldDouble>(field)) {
     std::get<FieldDouble>(field).resize(var.gridsize * var.nwpv);
-    return field;
+    return std::move(field);
   } else  if (var.memType == MemType::Float &&  std::holds_alternative<FieldFloat>(field)) {
     std::get<FieldFloat>(field).resize(var.gridsize * var.nwpv);
-    return field;
+    return std::move(field);
   } else {
     throw std::runtime_error("Not supported type");
   }