Fix compiler warnings:

fix [-Winconsistent-missing-override]
fix [-Wunused-lambda-capture]
fix [-Wunused-variable]
fix [-Wswitch]

src/Mod/Part/App/FeaturePartSection.h

@@ -44,9 +44,11 @@ public:
     //@{
     /// recalculate the Feature
     short mustExecute() const override;
+
 protected:
-    BRepAlgoAPI_BooleanOperation* makeOperation(const TopoDS_Shape&, const TopoDS_Shape&) const override;
-    virtual const char *opCode() const;
+    BRepAlgoAPI_BooleanOperation* makeOperation(const TopoDS_Shape&,
+                                                const TopoDS_Shape&) const override;
+    const char *opCode() const override;
     //@}
 };
 

src/Mod/Part/App/PartFeatures.h

@@ -86,7 +86,7 @@ public:
     const char* getViewProviderName() const override {
         return "PartGui::ViewProviderLoft";
     }
-    void setupObject();
+    void setupObject() override;
     //@}
 
 protected:
@@ -118,7 +118,7 @@ public:
     const char* getViewProviderName() const override {
         return "PartGui::ViewProviderSweep";
     }
-    void setupObject();
+    void setupObject() override;
     //@}
 
 protected: