[xmlsec] how to print errors of XMLSec in link list

[Umesh Chandak]

Hi All,
I don't want to print the errors generated or populated by xmlsec on
stderr or stdout. Instead I want them to in link list. But I don't want
to create link list in call back function of error handler. As we can't
pass the user specific data to the callback. Can anybody tell me how to
achieve this?
I had set my callback using   xmlSecErrorsSetCallback API of XMLSec.

Thanks.
Regards,
Umesh