Fix unused warning in cvrf_eval.c
Fix unused warning in cvrf_eval.c

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