PrimaryDPDMaker: Fix clang warnings.

Missing override keywords.

PhysicsAnalysis/PrimaryDPDMaker/PrimaryDPDMaker/CaloTimeFilterTool.h

@@ -20,11 +20,11 @@ class CaloTimeFilterTool : public asg::AsgTool, virtual public ICaloTimeFilterTo
     virtual ~CaloTimeFilterTool() = default;
     
   
-  /** Overriding initialize and finalize */
+  virtual
   StatusCode getTimeDifference(TimingFilterInformation& time_info, const SG::ReadHandleKey<LArCollisionTime>& read_key,
                                          const EventContext& ctx) const override;
  
-  StatusCode getTimeDifference(TimingFilterInformation& time_info);
+  virtual StatusCode getTimeDifference(TimingFilterInformation& time_info) override;
  
  protected:
   

PhysicsAnalysis/PrimaryDPDMaker/PrimaryDPDMaker/CollisionFilterAlg.h

@@ -23,9 +23,9 @@ class CollisionFilterAlg : public AthReentrantAlgorithm
   CollisionFilterAlg( const std::string& name, ISvcLocator* pSvcLocator );
   virtual ~CollisionFilterAlg()=default; 
 
-  StatusCode initialize() override ;
-  StatusCode execute(const EventContext& ctx) const ;
-  StatusCode finalize() override;
+  virtual StatusCode initialize() override ;
+  virtual StatusCode execute(const EventContext& ctx) const override;
+  virtual StatusCode finalize() override;
 
  private: