Re-declare virtual function with override keyword

According to ATLAS Coding Guidelines virtual functions in derived
classes which override methods from the base class should also be
declared with the override keyword. [redeclare-virtual]

InnerDetector/InDetEventCnv/SCT_RawDataByteStreamCnv/src/SCTRawContByteStreamTool.h

@@ -63,8 +63,8 @@ class SCTRawContByteStreamTool : public extends<AthAlgTool, ISCTRawContByteStrea
    * @param rawEvtWrite Data type for writing raw event.
    * @param log Object used to transmit messages and log errors.
    * */
-  StatusCode convert(const SCT_RDO_Container* sctRDOCont, 
-                     RawEventWrite* rawEvtWrite, MsgStream& log) const;
+  virtual StatusCode convert(const SCT_RDO_Container* sctRDOCont, 
+                             RawEventWrite* rawEvtWrite, MsgStream& log) const override;
   
  private: 
 

InnerDetector/InDetEventCnv/SCT_RawDataByteStreamCnv/src/SCT_RodEncoder.h

@@ -52,13 +52,13 @@ class SCT_RodEncoder : public extends<AthAlgTool, ISCT_RodEncoder>
   virtual ~SCT_RodEncoder() = default;
 
   /** AlgTool initialize */
-  virtual StatusCode initialize();
+  virtual StatusCode initialize() override;
 
   /** AlgTool finalize*/
-  virtual StatusCode finalize();
+  virtual StatusCode finalize() override;
 
   /// convert all collections of RDO's in the current  list to vector of 32bit words   
-  virtual void fillROD(std::vector<uint32_t>& vec32Data, const uint32_t& robID, const vRDOs_t& vecRDOs) const;
+  virtual void fillROD(std::vector<uint32_t>& vec32Data, const uint32_t& robID, const vRDOs_t& vecRDOs) const override;
 
  private: