tdf#145128 "Perform file extension check" should be disabled if finalized

Change-Id: I7181ab8dde28fd5580a90fb267b31eaffd6a9878
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/124567
Tested-by: Jenkins
Reviewed-by: Andras Timar <andras.timar@collabora.com>
(cherry picked from commit a2f0d457c8addeeef768a93f6a174617094a0254)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/124850
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
diff --git a/cui/source/options/optgdlg.cxx b/cui/source/options/optgdlg.cxx
index baa96ad..161a47d 100644
--- a/cui/source/options/optgdlg.cxx
+++ b/cui/source/options/optgdlg.cxx
@@ -336,6 +336,7 @@ void OfaMiscTabPage::Reset( const SfxItemSet* rSet )
    m_xPerformFileExtCheck->set_active(
        officecfg::Office::Common::Misc::PerformFileExtCheck::get());
    m_xPerformFileExtCheck->save_state();
    m_xPerformFileExtCheck->set_sensitive(!officecfg::Office::Common::Misc::PerformFileExtCheck::isReadOnly());
#endif
}