Re: [PATCH 0/1] MR6306: msxml3: Fix compilation errors with Clang 18.

[Grigory Vasilyev (＠h0tc0d3)]

@nsivov `--with-mingw=clang`.

This is my old patch. I tested it now, it seems to compile without it. About two months ago there was a clang bug, and it refused to accept `xmlErrorPtr`. It seems like he was complaining that the types were different and there was a `const` in the prototype, `const xmlErrorPtr` also didn't compile. Also in main.c some types were not resolved and it was necessary to add `#include <libxml/globals.h>`. It may have been a clang bug that was fixed in Fedora 40.

```
typedef void xmlStructuredErrorFunc		(void * userData, 
    				 const xmlError * error);
```
https://gnome.pages.gitlab.gnome.org/libxml2/devhelp/libxml2-xmlerror.html