Re: pgsql: Fix crash with old libxml2

On 2019-Mar-08, Alvaro Herrera wrote:

> Fix crash with old libxml2
> 
> Certain libxml2 versions (such as the 2.7.6 commonly seen in older
> distributions, but apparently only on x86_64) contain a bug that causes
> xmlCopyNode, when called on a XML_DOCUMENT_NODE, to return a node that
> xmlFreeNode crashes on.  Arrange to call xmlFreeDoc instead of
> xmlFreeNode for those nodes.

I forgot to note in the commit message that the crash was introduced
yesterday with commit 251cf2e27bec98274e8bb002608680bdc211319e, "Fix
minor deficiencies in XMLTABLE, xpath(), xmlexists()".

-- 
Álvaro Herrera                https://www.2ndQuadrant.com/
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