Resolves: tdf#143785 save/restore SdrModel::IsChanged

Change-Id: I253915c359cf72f80b21e21ff34e0ee406e5b3a8
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120550
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
(cherry picked from commit 6dc23567639bebf18ceb8d9a3721228bffe14202)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/120577
Reviewed-by: Adolfo Jayme Barrientos <fitojb@ubuntu.com>
diff --git a/cui/source/tabpages/transfrm.cxx b/cui/source/tabpages/transfrm.cxx
index 94ff0ef..ae84470 100644
--- a/cui/source/tabpages/transfrm.cxx
+++ b/cui/source/tabpages/transfrm.cxx
@@ -648,6 +648,7 @@ void SvxSlantTabPage::Reset(const SfxItemSet* rAttrs)
                *pView->GetMarkedObjectList().GetMark(0)->GetMarkedSdrObj()));

        //save geometry
        const bool bOrigModelChangeState = pView->GetModel()->IsChanged();
        SdrCustomShapeGeometryItem aInitialGeometry(rSdrObjCustomShape.GetMergedItem(SDRATTR_CUSTOMSHAPE_GEOMETRY));
        EnhancedCustomShape2d aShape(rSdrObjCustomShape);

@@ -691,6 +692,7 @@ void SvxSlantTabPage::Reset(const SfxItemSet* rAttrs)

        //restore geometry
        rSdrObjCustomShape.SetMergedItem(aInitialGeometry);
        pView->GetModel()->SetChanged(bOrigModelChangeState);
    }

    for (int i = 0; i < 2; ++i)