Simplified logic in cvrf_enumeration_attr
Simplified logic in cvrf_enumeration_attr

You can free(NULL) and the enum to str call with num was just above
that, so this has the exact same behavior.

OpenSCAP/openscap,jan-cerny/openscap,redhatrises/openscap,redhatrises/openscap,jan-cerny/openscap,mpreisler/openscap,redhatrises/openscap,jan-cerny/openscap,OpenSCAP/openscap,redhatrises/openscap,mpreisler/openscap,mpreisler/openscap,jan-cerny/openscap,jan-cerny/openscap,OpenSCAP/openscap,OpenSCAP/openscap,OpenSCAP/openscap,mpreisler/openscap,redhatrises/openscap,mpreisler/openscap,redhatrises/openscap,OpenSCAP/openscap,jan-cerny/openscap,mpreisler/openscap