Daniel Veillard bdd66182ef Avoid building recursive entities ...

For https://bugzilla.gnome.org/show_bug.cgi?id=762100

When we detect a recusive entity we should really not
build the associated data, moreover if someone bypass
libxml2 fatal errors and still tries to serialize a broken
entity make sure we don't risk to get ito a recursion

* parser.c: xmlParserEntityCheck() don't build if entity loop
  were found and remove the associated text content
* tree.c: xmlStringGetNodeList() avoid a potential recursion

2016-05-23 15:01:07 +08:00

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