CustomWeld is final

Change-Id: I2a9b774a58481453232a9925367bf136447ea27c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/104036
Tested-by: Caolán McNamara <caolanm@redhat.com>
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/include/vcl/customweld.hxx b/include/vcl/customweld.hxx
index 8943110..d94837b 100644
--- a/include/vcl/customweld.hxx
+++ b/include/vcl/customweld.hxx
@@ -128,7 +128,7 @@ public:
    CustomWidgetController& operator=(CustomWidgetController&&) = default;
};

class VCL_DLLPUBLIC CustomWeld
class VCL_DLLPUBLIC CustomWeld final
{
private:
    weld::CustomWidgetController& m_rWidgetController;