[sr-dev] [kamailio/kamailio] lost: lost_held_dereference do not handles error message (#2724)

### Description When LIS server failed, then LIS send message like ``` The error response to the request is an error document. The following response shows an example error response. HTTP/1.1 200 OK Server: Example LIS Expires: Tue, 10 Jan 2006 03:49:20 GMT Cache-control: private Content-Type: application/held+xml;charset=utf-8 Content-Length: 182 <?xml version="1.0"?> <error xmlns="urn:ietf:params:xml:ns:geopriv:held" code="locationUnknown"> <message xml:lang="en">Unable to determine location </message> </error> ``` Here is HTTP code is 200. lost_held_dereference now simply check HTTP code and do not check XML body. Expected XML content check for: 1. XML HELD error message 2. check `findServiceResponse` or `presence` element check like it done for `lost_query`. This check is important because PIDF-LO object may be added to the multipart body. And HELD XML error handling prevents error message addition as PDF-LO object. -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/2724