Bug#866676: libxml-libxml-perl: CVE-2017-10672: Use-after-free in XML::LibXML::Node::replaceChild

[Salvatore Bonaccorso]

Hi

I backed out the commit again for now. There were several FTBFS on
release architectures after that upload (not sure if all are related
to the fix), but this might need a proper investigation first.

Regards,
Salvatore