HACK to avoid empty page size/div by 0 in chart2 LegendWrapper::setPosition

see thread starting at
<http://lists.freedesktop.org/archives/libreoffice/2015-January/065706.html>
"CppunitTest_sw_ooxmlsdrexport: division by zero in
chart2/source/controller/chartapiwrapper/LegendWrapper.cxx"

Change-Id: If8fde31dff04d9a223687838df6dd9fe4e57ee8b
diff --git a/svx/source/unodraw/unoshap4.cxx b/svx/source/unodraw/unoshap4.cxx
index 0054afc..75f8846 100644
--- a/svx/source/unodraw/unoshap4.cxx
+++ b/svx/source/unodraw/unoshap4.cxx
@@ -429,7 +429,7 @@ bool SvxOle2Shape::createObject( const SvGlobalName &aClassName )
            {}
            pOle2Obj->SetLogicRect( aRect );
        }
        else
        else if (!aRect.IsEmpty()) //HACK: can aRect legally be empty?
        {
            awt::Size aSz;
            Size aSize = aRect.GetSize();