[xml] namespace attached to document freed at document free time?

[Chris Ryland <cpr emsoftware com>]

If I create a name space, e.g.,

ns = xmlNewNs(np, BAD_CAST "http:...", NULL)

and a document

doc = xmlNewDoc(BAD_CAST "1.0");

and use ns when creating nodes in that document (xmlNewNode(ns, ...)), 
when I later free the document, the namespace also seems to be freed 
automatically. (Or at least, when I free that namespace before freeing 
the document, I get malloc() debug messages about double freeing.)

Is this true?

Cheers!
--Chris Ryland / Em Software, Inc. / www.emsoftware.com