GeoModelSvc: Fix clang warnings.

Missing override keywords,

DetectorDescription/GeoModel/GeoModelSvc/src/GeoModelSvc.h

@@ -27,24 +27,24 @@ class GeoModelSvc : public AthService, virtual public IGeoModelSvc,
 {
 public:
 
-    virtual StatusCode initialize();
-    virtual StatusCode finalize();
+    virtual StatusCode initialize() override;
+    virtual StatusCode finalize() override;
 
     // Query the interfaces.
     //   Input: riid, Requested interface ID
     //          ppvInterface, Pointer to requested interface
     //   Return: StatusCode indicating SUCCESS or FAILURE.
     // N.B. Don't forget to release the interface after use!!!
-    virtual StatusCode queryInterface( const InterfaceID& riid, void** ppvInterface );
+    virtual StatusCode queryInterface( const InterfaceID& riid, void** ppvInterface ) override;
 
     /// Callback from TagInfoMgr on TagInfo change
     virtual void       tagInfoUpdated() override final;
 
     StatusCode compareTags();
 
-    virtual const IGeoModelTool* getTool(std::string toolName) const;
+    virtual const IGeoModelTool* getTool(std::string toolName) const override;
 
-    virtual StatusCode clear();
+    virtual StatusCode clear() override;
 
     friend class SvcFactory<GeoModelSvc>;
 
@@ -98,32 +98,32 @@ private:
     int           m_supportedGeometry;            // Supported geometry flag is set in jobOpt and is equal to major release version
     bool          m_ignoreTagSupport;             // If true then don't check SUPPORT flag for ATLAS tag
 
-    const std::string & atlasVersion()         const {return m_AtlasVersion; }
-    const std::string & inDetVersionOverride() const {return m_InDetVersionOverride ;}
-    const std::string & pixelVersionOverride() const {return m_PixelVersionOverride ;}
-    const std::string & SCT_VersionOverride()  const {return m_SCT_VersionOverride  ;}
-    const std::string & TRT_VersionOverride()  const {return m_TRT_VersionOverride  ;}
-    const std::string & LAr_VersionOverride()  const {return m_LAr_VersionOverride  ;}
-    const std::string & tileVersionOverride()  const {return m_TileVersionOverride  ;}
-    const std::string & muonVersionOverride()  const {return m_MuonVersionOverride  ;}
-    const std::string & caloVersionOverride()  const {return m_CaloVersionOverride  ;}
-    const std::string & magFieldVersionOverride()     const {return m_MagFieldVersionOverride  ;}
-    const std::string & cavernInfraVersionOverride()  const {return m_CavernInfraVersionOverride  ;}
-    const std::string & forwardDetectorsVersionOverride()  const {return m_ForwardDetectorsVersionOverride  ;}
-
-    const std::string & inDetVersion()         const {return m_geoDbTagSvc->inDetVersion(); }
-    const std::string & pixelVersion()         const {return m_geoDbTagSvc->pixelVersion(); }
-    const std::string & SCT_Version()          const {return m_geoDbTagSvc->SCT_Version(); }
-    const std::string & TRT_Version()          const {return m_geoDbTagSvc->TRT_Version(); }
-    const std::string & LAr_Version()          const {return m_geoDbTagSvc->LAr_Version(); }
-    const std::string & tileVersion()          const {return m_geoDbTagSvc->tileVersion(); }
-    const std::string & muonVersion()          const {return m_geoDbTagSvc->muonVersion(); }
-    const std::string & caloVersion()          const {return m_geoDbTagSvc->caloVersion(); }
-    const std::string & magFieldVersion()      const {return m_geoDbTagSvc->magFieldVersion(); }
-    const std::string & cavernInfraVersion()   const {return m_geoDbTagSvc->cavernInfraVersion(); }
-    const std::string & forwardDetectorsVersion()   const {return m_geoDbTagSvc->forwardDetectorsVersion(); }
-
-    GeoModel::GeoConfig geoConfig() const {return m_geoDbTagSvc->geoConfig();}
+    virtual const std::string & atlasVersion()         const override {return m_AtlasVersion; }
+    virtual const std::string & inDetVersionOverride() const override {return m_InDetVersionOverride ;}
+    virtual const std::string & pixelVersionOverride() const override {return m_PixelVersionOverride ;}
+    virtual const std::string & SCT_VersionOverride()  const override {return m_SCT_VersionOverride  ;}
+    virtual const std::string & TRT_VersionOverride()  const override {return m_TRT_VersionOverride  ;}
+    virtual const std::string & LAr_VersionOverride()  const override {return m_LAr_VersionOverride  ;}
+    virtual const std::string & tileVersionOverride()  const override {return m_TileVersionOverride  ;}
+    virtual const std::string & muonVersionOverride()  const override {return m_MuonVersionOverride  ;}
+    virtual const std::string & caloVersionOverride()  const override {return m_CaloVersionOverride  ;}
+    virtual const std::string & magFieldVersionOverride()     const override {return m_MagFieldVersionOverride  ;}
+    virtual const std::string & cavernInfraVersionOverride()  const override {return m_CavernInfraVersionOverride  ;}
+    virtual const std::string & forwardDetectorsVersionOverride()  const override {return m_ForwardDetectorsVersionOverride  ;}
+
+    virtual const std::string & inDetVersion()         const override {return m_geoDbTagSvc->inDetVersion(); }
+    virtual const std::string & pixelVersion()         const override {return m_geoDbTagSvc->pixelVersion(); }
+    virtual const std::string & SCT_Version()          const override {return m_geoDbTagSvc->SCT_Version(); }
+    virtual const std::string & TRT_Version()          const override {return m_geoDbTagSvc->TRT_Version(); }
+    virtual const std::string & LAr_Version()          const override {return m_geoDbTagSvc->LAr_Version(); }
+    virtual const std::string & tileVersion()          const override {return m_geoDbTagSvc->tileVersion(); }
+    virtual const std::string & muonVersion()          const override {return m_geoDbTagSvc->muonVersion(); }
+    virtual const std::string & caloVersion()          const override {return m_geoDbTagSvc->caloVersion(); }
+    virtual const std::string & magFieldVersion()      const override {return m_geoDbTagSvc->magFieldVersion(); }
+    virtual const std::string & cavernInfraVersion()   const override {return m_geoDbTagSvc->cavernInfraVersion(); }
+    virtual const std::string & forwardDetectorsVersion()   const override {return m_geoDbTagSvc->forwardDetectorsVersion(); }
+
+    virtual GeoModel::GeoConfig geoConfig() const override {return m_geoDbTagSvc->geoConfig();}
 
     StatusCode geoInit ();
     StatusCode fillTagInfo() const;