add missing virtual keyword to cleanUp() method

MuonSpectrometer/MuonReconstruction/MuonRecTools/MuonRecToolInterfaces/MuonRecToolInterfaces/IMuonTrackSegmentMatchingTool.h

@@ -32,7 +32,7 @@ namespace Muon {
 	The caller should ensure the track gets deleted. */
     virtual bool match( const Trk::Track& track, const MuonSegment& segment, bool useTightCuts = false ) const = 0;
 
-    void cleanUp() const {};
+    virtual void cleanUp() const {};
   };
   
   inline const InterfaceID& IMuonTrackSegmentMatchingTool::interfaceID()

Reconstruction/MuonIdentification/MuonCombinedToolInterfaces/MuonCombinedToolInterfaces/IMuonCandidateTrackBuilderTool.h

@@ -28,7 +28,7 @@ namespace Muon {
     /** @brief build a track out of a MuonCandidate */
     virtual Trk::Track* buildCombinedTrack( const Trk::Track& idTrack, const MuonCandidate& candidate ) const = 0;
 
-    void cleanUp() const {};
+    virtual void cleanUp() const {};
 
   };
  

Reconstruction/MuonIdentification/MuonCombinedTrackFindingTools/src/MuonCandidateTrackBuilderTool.h

@@ -73,7 +73,7 @@ namespace Muon {
     /**IMuonCandidateTrackBuilderTool interface: buildCombinedTrack */   
     Trk::Track* buildCombinedTrack( const Trk::Track& idTrack, const MuonCandidate& candidate ) const;
 
-    void cleanUp() const;
+    virtual void cleanUp() const override;
 
   private:
     ToolHandle<IMuonSegmentTrackBuilder> m_muonTrackBuilder{this,"MuonSegmentTrackBuilder","Muon::MooTrackBuilder/MooMuonTrackBuilder"};