ⓘ Normalize undefined and empty XML-RPC values during encoding and parsing, preventing uninitialized-value warnings and uncontrolled error-log growth.
https://github.com/webmin/webmin/issues/2793
ⓘ Move XML-RPC marshalling helpers into `xmlrpc-lib.pl`, remove the caller guard from `xmlrpc.cgi`, and preserve coverage through direct library tests plus the CGI invocation regression.
https://github.com/webmin/webmin/pull/2763