loplugin:redundantcast

Change-Id: I62aa8ca0f07dce9a820527ac1aef9c44cd70223a
diff --git a/include/vcl/outdev.hxx b/include/vcl/outdev.hxx
index 7066df4..16f44b8 100644
--- a/include/vcl/outdev.hxx
+++ b/include/vcl/outdev.hxx
@@ -281,7 +281,7 @@ private:
    {
        assert(mnRefCnt>0);
        if (!--mnRefCnt)
            delete const_cast<OutputDevice*>(this);
            delete this;
    }

private: