App: modernize C++: use default member init

src/App/VRMLObject.cpp

@@ -37,7 +37,7 @@ using namespace App;
 PROPERTY_SOURCE(App::VRMLObject, App::GeoFeature)
 
 
-VRMLObject::VRMLObject() : index(0)
+VRMLObject::VRMLObject()
 {
     ADD_PROPERTY_TYPE(VrmlFile,(nullptr),"",Prop_None,"Included file with the VRML definition");
     ADD_PROPERTY_TYPE(Urls,(""),"",static_cast<PropertyType>(Prop_ReadOnly|Prop_Output|Prop_Transient),
@@ -48,8 +48,6 @@ VRMLObject::VRMLObject() : index(0)
     Resources.setSize(0);
 }
 
-VRMLObject::~VRMLObject() = default;
-
 short VRMLObject::mustExecute() const
 {
     return 0;