tdf#142467: restore "final" in CandleStickChartType class

The "final" was removed in commit
e06f2bb00137655dbf6f0a8c8c2fc555720f4d3f (tdf#142467 crash on calling
'getInfoHelper' in final class, 2021-05-26)
and commit
6cb1745c24c7651050e30216860c539fa13cc0e2 (tdf#142467: Update comments
with GCC bug ID, 2021-05-31)
due to a bug in gcc <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100797>.

Now it has been amost 3 years past and that gcc bug has long been fixed,
so it is time to restore the "final".

Change-Id: I7db9fe59209cfbae4c04bb3a91cd764db9a38d98
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163447
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
diff --git a/chart2/source/model/template/CandleStickChartType.hxx b/chart2/source/model/template/CandleStickChartType.hxx
index e761075..822422a 100644
--- a/chart2/source/model/template/CandleStickChartType.hxx
+++ b/chart2/source/model/template/CandleStickChartType.hxx
@@ -23,9 +23,7 @@
namespace chart
{

// see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100797> "[10/11/12 Regression] using
// declaration causing virtual call with wrongly adjusted this pointer" before restoring 'final'
class CandleStickChartType /* final */ : public ChartType
class CandleStickChartType final : public ChartType
{
public:
    explicit CandleStickChartType();
diff --git a/compilerplugins/clang/fragiledestructor.cxx b/compilerplugins/clang/fragiledestructor.cxx
index f8ec76a..7777100 100644
--- a/compilerplugins/clang/fragiledestructor.cxx
+++ b/compilerplugins/clang/fragiledestructor.cxx
@@ -51,8 +51,6 @@ public:
             return false;
        if (loplugin::isSamePathname(fn, SRCDIR "/sw/source/core/layout/ssfrm.cxx")) // ~SwFrame calling IsDeleteForbidden
             return false;
        if (loplugin::isSamePathname(fn, SRCDIR "/chart2/source/model/template/CandleStickChartType.cxx")) // to ignore <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100797> "[10/11/12 Regression] using declaration causing virtual call with wrongly adjusted this pointer" workaround
             return false;

        return true;
    }