Refactor: Make ds_rds_dump_arf_content return oscap_source
Refactor: Make ds_rds_dump_arf_content return oscap_source

This actually grows the size of code a little bit. That's because we
are adding error handling that has been previously missing.

redhatrises/openscap,postfix/openscap,Hexadorsimal/openscap,jan-cerny/openscap,postfix/openscap,redhatrises/openscap,redhatrises/openscap,mpreisler/openscap,mpreisler/openscap,ybznek/openscap,Hexadorsimal/openscap,openprivacy/openscap,OpenSCAP/openscap,redhatrises/openscap,openprivacy/openscap,OpenSCAP/openscap,openprivacy/openscap,OpenSCAP/openscap,OpenSCAP/openscap,mpreisler/openscap,redhatrises/openscap,ybznek/openscap,jan-cerny/openscap,Hexadorsimal/openscap,openprivacy/openscap,openprivacy/openscap,ybznek/openscap,mpreisler/openscap,ybznek/openscap,Hexadorsimal/openscap,jan-cerny/openscap,mpreisler/openscap,postfix/openscap,OpenSCAP/openscap,OpenSCAP/openscap,Hexadorsimal/openscap,postfix/openscap,jan-cerny/openscap,Hexadorsimal/openscap,ybznek/openscap,mpreisler/openscap,jan-cerny/openscap,ybznek/openscap,openprivacy/openscap,jan-cerny/openscap,postfix/openscap,redhatrises/openscap,postfix/openscap