Add bool bIgnoreUndo parameter to removeFromDrawPageAndFree()

In preparation of using that in the dtor.

Change-Id: I9a8713390c548e774c1e23cef201effe00a29be9
diff --git a/sc/inc/postit.hxx b/sc/inc/postit.hxx
index 8791a8b..993de2a 100644
--- a/sc/inc/postit.hxx
+++ b/sc/inc/postit.hxx
@@ -70,7 +70,7 @@ public:

    /** Remove from draw page and free caption object if no Undo recording.
     */
    void removeFromDrawPageAndFree();
    void removeFromDrawPageAndFree( bool bIgnoreUndo = false );

    /** Release all management of the SdrCaptionObj* in all instances of this
        list and dissolve. The SdrCaptionObj pointer returned is ready to be
diff --git a/sc/source/core/data/postit.cxx b/sc/source/core/data/postit.cxx
index 36d1f82..524328e 100644
--- a/sc/source/core/data/postit.cxx
+++ b/sc/source/core/data/postit.cxx
@@ -717,7 +717,7 @@ void ScCaptionPtr::removeFromDrawPage( SdrPage& rDrawPage )
    assert(pObj == mpCaption); (void)pObj;
}

void ScCaptionPtr::removeFromDrawPageAndFree()
void ScCaptionPtr::removeFromDrawPageAndFree( bool bIgnoreUndo )
{
    assert(mpHead && mpCaption);
    SdrPage* pDrawPage = mpCaption->GetPage();
@@ -725,12 +725,16 @@ void ScCaptionPtr::removeFromDrawPageAndFree()
    if (pDrawPage)
    {
        pDrawPage->RecalcObjOrdNums();
        ScDrawLayer* pDrawLayer = dynamic_cast<ScDrawLayer*>(mpCaption->GetModel());
        SAL_WARN_IF( !pDrawLayer, "sc.core", "ScCaptionPtr::removeFromDrawPageAndFree - object without drawing layer");
        // create drawing undo action (before removing the object to have valid draw page in undo action)
        const bool bRecording = (pDrawLayer && pDrawLayer->IsRecording());
        if (bRecording)
            pDrawLayer->AddCalcUndo( new SdrUndoDelObj( *mpCaption ));
        bool bRecording = false;
        if (!bIgnoreUndo)
        {
            ScDrawLayer* pDrawLayer = dynamic_cast<ScDrawLayer*>(mpCaption->GetModel());
            SAL_WARN_IF( !pDrawLayer, "sc.core", "ScCaptionPtr::removeFromDrawPageAndFree - object without drawing layer");
            // create drawing undo action (before removing the object to have valid draw page in undo action)
            bRecording = (pDrawLayer && pDrawLayer->IsRecording());
            if (bRecording)
                pDrawLayer->AddCalcUndo( new SdrUndoDelObj( *mpCaption ));
        }
        // remove the object from the drawing page, delete if undo is disabled
        removeFromDrawPage( *pDrawPage );
        if (!bRecording)