[Bug 46206] Altium Designer 17 account sign in fails as of 3.19

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=46206

Damjan Jovanovic <damjan.jov at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |damjan.jov at gmail.com

--- Comment #11 from Damjan Jovanovic <damjan.jov at gmail.com> ---
Those 3 commits, especially 4460cb3377, are also the issue in bug 53531.

The problem in bug 53531 is also an "Out of memory" error. There it's caused by
this simple one element example:

<element xmlns="whatever"/>

Attempting to call IXMLDOMElement::get_attributes() on that element, then call
IXMLDOMNamedNodeMap::get_item(0) on the returned attribute map, causes it to
always fail with E_OUTOFMEMORY in domelem_get_item(), because default
namespaces have a NULL prefix, so the call to libxml2's xmlNewNsProp() always
passes NULL as the property name, and NULL attribute names aren't allowed so
libxml2 always returns NULL, causing Wine's domelem_get_item() to always
returns E_OUTOFMEMORY:

---snip---
1834    curr = xmlNewNsProp(NULL, xmlns, ns->prefix, ns->href);
1835    if (!curr) {
1836        xmlFreeNs(xmlns);
1837        return E_OUTOFMEMORY;
1838    }
---snip---

I am not sure how best to fix this. Some help would be appreciated.

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