sc: simplify ScModule::GetClipDoc

Change-Id: I36a79a41b989d37efc35a9f9b4bebca9bdaf9ee9
Reviewed-on: https://gerrit.libreoffice.org/54935
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Henry Castro <hcastro@collabora.com>
diff --git a/sc/source/ui/app/scmod.cxx b/sc/source/ui/app/scmod.cxx
index fc81453..26652dd 100644
--- a/sc/source/ui/app/scmod.cxx
+++ b/sc/source/ui/app/scmod.cxx
@@ -662,28 +662,22 @@ void ScModule::SetDragJump(
ScDocument* ScModule::GetClipDoc()
{
    // called from document
    SfxViewFrame* pViewFrame = nullptr;
    ScTabViewShell* pViewShell = nullptr;
    const ScTransferObj* pObj = nullptr;
    css::uno::Reference<css::datatransfer::XTransferable2> xTransferable;

    if ((pViewShell = dynamic_cast<ScTabViewShell*>(SfxViewShell::Current())))
        pObj = ScTransferObj::GetOwnClipboard(pViewShell->GetClipData());
        xTransferable.set(pViewShell->GetClipData());
    else if ((pViewShell = dynamic_cast<ScTabViewShell*>(SfxViewShell::GetFirst())))
        pObj = ScTransferObj::GetOwnClipboard(pViewShell->GetClipData());
    else
        xTransferable.set(pViewShell->GetClipData());
    else if ((pViewFrame = SfxViewFrame::GetFirst()))
    {
        css::uno::Reference<css::datatransfer::clipboard::XClipboard> xClipboard;

        if (SfxViewFrame* pViewFrame = SfxViewFrame::GetFirst())
            xClipboard = pViewFrame->GetWindow().GetClipboard();

        if (xClipboard.is())
        {
            css::uno::Reference<css::datatransfer::XTransferable2> xTransferable(
                xClipboard->getContents(), css::uno::UNO_QUERY);
            pObj = ScTransferObj::GetOwnClipboard(xTransferable);
        }
        css::uno::Reference<css::datatransfer::clipboard::XClipboard> xClipboard =
            pViewFrame->GetWindow().GetClipboard();
        xTransferable.set(xClipboard.is() ? xClipboard->getContents() : nullptr, css::uno::UNO_QUERY);
    }

    const ScTransferObj* pObj = ScTransferObj::GetOwnClipboard(xTransferable);
    if (pObj)
    {
        ScDocument* pDoc = pObj->GetDocument();