tdf#122250 Crash when running extension

as a consequence of

    commit 4e07987ce8134312920682e3481c3f8e3d7b66c3
    Date:   Thu Aug 25 15:08:55 2016 +0200
    cid#1371154 Missing move assignment operator

this extensions appears to pass bogus data into VCLXWindow::setProperty,
so I had to workaround that when debugging

Change-Id: Ib6728c0a990bd7cfbfed43d79b7560bd2f7f5a67
Reviewed-on: https://gerrit.libreoffice.org/66293
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
diff --git a/basic/source/sbx/sbxarray.cxx b/basic/source/sbx/sbxarray.cxx
index fc86839..1b7054f 100644
--- a/basic/source/sbx/sbxarray.cxx
+++ b/basic/source/sbx/sbxarray.cxx
@@ -190,10 +190,14 @@
                if( eType != SbxOBJECT || pVar->GetClass() != SbxClassType::Object )
                    pVar->Convert( eType );
        SbxVariableRef& rRef = GetRef( nIdx );
        // tdf#122250. It is possible that I hold the last reference to myself, so check, otherwise I might
        // call SetFlag on myself after I have died.
        bool removingMyself = rRef.get() && rRef->GetParameters() == this && GetRefCount() == 1;
        if(rRef.get() != pVar )
        {
            rRef = pVar;
            SetFlag( SbxFlagBits::Modified );
            if (!removingMyself)
                SetFlag( SbxFlagBits::Modified );
        }
    }
}
diff --git a/toolkit/source/awt/vclxwindow.cxx b/toolkit/source/awt/vclxwindow.cxx
index ddd25ad..6f82121 100644
--- a/toolkit/source/awt/vclxwindow.cxx
+++ b/toolkit/source/awt/vclxwindow.cxx
@@ -1717,6 +1717,8 @@
            WinBits nStyle = pWindow->GetStyle();
            sal_uInt16 nTmp = 0;
            Value >>= nTmp;
            // clear any dodgy bits passed in, can come from dodgy extensions
            nTmp &= o3tl::typed_flags<WindowBorderStyle>::mask;
            WindowBorderStyle nBorder = static_cast<WindowBorderStyle>(nTmp);
            if ( !bool(nBorder) )
            {