Add missing override on destructor

src/attendeeline.h

@@ -79,7 +79,7 @@ public:
     };
 
     explicit AttendeeLine(QWidget *parent);
-    virtual ~AttendeeLine()
+    ~AttendeeLine() override
     {
     }
 

src/resourcemanagement.cpp

@@ -36,7 +36,7 @@ using namespace IncidenceEditorNG;
 class FreebusyViewCalendar : public EventViews::ViewCalendar
 {
 public:
-    virtual ~FreebusyViewCalendar()
+    ~FreebusyViewCalendar() override
     {
     }