tdf#143245 activate-on-single-click only if 'up' is at active entry

which is typically selected by the 'down'

Change-Id: I23382fb97146820da49e570280778729a3156f03
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/118861
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
diff --git a/vcl/source/treelist/svimpbox.cxx b/vcl/source/treelist/svimpbox.cxx
index 11a8fb3..835ee2e 100644
--- a/vcl/source/treelist/svimpbox.cxx
+++ b/vcl/source/treelist/svimpbox.cxx
@@ -2017,7 +2017,16 @@ void SvImpLBox::MouseButtonUp( const MouseEvent& rMEvt)
    }

    if (m_pView->mbActivateOnSingleClick)
    {
        Point aPos(rMEvt.GetPosPixel());
        SvTreeListEntry* pEntry = GetEntry(aPos);
        // tdf#143245 ActivateOnSingleClick only
        // if the 'up' is at the active entry
        // typically selected by the 'down'
        if (!pEntry || pEntry != m_pCursor)
            return;
        m_pView->DoubleClickHdl();
    }
}

void SvImpLBox::MouseMove( const MouseEvent& rMEvt)