[issue1082] restore destructors

src/search/heuristic.cc

@@ -34,6 +34,9 @@ Heuristic::Heuristic(const plugins::Options &opts)
       task_proxy(*task) {
 }
 
+Heuristic::~Heuristic() {
+}
+
 void Heuristic::set_preferred(const OperatorProxy &op) {
     preferred_operators.insert(op.get_ancestor_operator_id(tasks::g_root_task.get()));
 }

src/search/heuristic.h

@@ -7,7 +7,6 @@
 #include "task_proxy.h"
 
 #include "algorithms/ordered_set.h"
-#include "tasks/root_task.h"
 
 #include <memory>
 #include <vector>
@@ -79,6 +78,7 @@ class Heuristic : public Evaluator {
                        const std::string &name,
                        utils::Verbosity verbosity);
     explicit Heuristic(const plugins::Options &opts);
+    virtual ~Heuristic() override;
 
     virtual void get_path_dependent_evaluators(
         std::set<Evaluator *> & /*evals*/) override {

src/search/heuristics/blind_search_heuristic.cc

@@ -24,6 +24,9 @@ BlindSearchHeuristic::BlindSearchHeuristic(const shared_ptr<AbstractTask> &trans
     }
 }
 
+BlindSearchHeuristic::~BlindSearchHeuristic() {
+}
+
 int BlindSearchHeuristic::compute_heuristic(const State &ancestor_state) {
     State state = convert_ancestor_state(ancestor_state);
     if (task_properties::is_goal_state(task_proxy, state))

src/search/heuristics/blind_search_heuristic.h

@@ -13,6 +13,7 @@ class BlindSearchHeuristic : public Heuristic {
                          bool cache_estimates,
                          const std::string &name,
                          utils::Verbosity verbosity);
+    ~BlindSearchHeuristic();
 };
 }