vcl: loplugin:override

Change-Id: I884e1e53eb26d092e8d75319d331e42dbc320209

vcl/unx/kde4/tst_exclude_socket_notifiers.hxx

@@ -35,7 +35,7 @@ class TestExcludeSocketNotifiers
     Q_OBJECT
     public:
         TestExcludeSocketNotifiers( const int* pipes );
-        virtual ~TestExcludeSocketNotifiers();
+        virtual ~TestExcludeSocketNotifiers() = override;
         bool received;
     public slots:
         void slotReceived();