//! Energy components for dhdl.xvg output
std::vector<double> dE_;
//! The delta U components (raw data + histogram)
- t_mde_delta_h_coll* dhc_ = nullptr;
+ std::unique_ptr<t_mde_delta_h_coll> dhc_;
//! Temperatures for simulated tempering groups
std::vector<real> temperatures_;