fix live children left behind at destroy

Change-Id: I5c02f27e72635b5cb658a620ead63ff3229c3994
diff --git a/extensions/source/propctrlr/browserview.cxx b/extensions/source/propctrlr/browserview.cxx
index b256447..097ce69 100644
--- a/extensions/source/propctrlr/browserview.cxx
+++ b/extensions/source/propctrlr/browserview.cxx
@@ -65,7 +65,7 @@ namespace pcr
            if (nTmpPage)
                m_nActivePage = nTmpPage;
        }
        m_pPropBox.clear();
        m_pPropBox.disposeAndClear();
        vcl::Window::dispose();
    }

diff --git a/forms/source/solar/control/navtoolbar.cxx b/forms/source/solar/control/navtoolbar.cxx
index 07429f0..88b854b 100644
--- a/forms/source/solar/control/navtoolbar.cxx
+++ b/forms/source/solar/control/navtoolbar.cxx
@@ -155,7 +155,7 @@ namespace frm
        for (auto i = m_aChildWins.begin(); i != m_aChildWins.end(); ++i)
            i->disposeAndClear();
        m_aChildWins.clear();
        m_pToolbar.clear();
        m_pToolbar.disposeAndClear();
        vcl::Window::dispose();
    }