-Werror,-Wnon-virtual-dtor (clang-cl)

Change-Id: I66967a6d79b0568557c67b26c3dc6c65f00db261
Reviewed-on: https://gerrit.libreoffice.org/84509
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
diff --git a/vcl/inc/win/winlayout.hxx b/vcl/inc/win/winlayout.hxx
index 0bd9222..244627c 100644
--- a/vcl/inc/win/winlayout.hxx
+++ b/vcl/inc/win/winlayout.hxx
@@ -64,6 +64,7 @@ struct GlobalWinGlyphCache

    static GlobalWinGlyphCache * get();

    virtual ~GlobalWinGlyphCache() {}
    virtual bool AllocateTexture(WinGlyphDrawElement& rElement, int nWidth, int nHeight) = 0;
    virtual void NotifyElementUsed(WinGlyphDrawElement& /*rElement*/) {}
    virtual void Prune() {}