Do not shadow a variable
Do not shadow a variable

Addressing:
/home/jcerny/openscap/tests/API/OVAL/test_api_syschar.c: In function ‘main’:
/home/jcerny/openscap/tests/API/OVAL/test_api_syschar.c:52:25: warning: declaration of ‘source’ shadows a previous local [-Wshadow]
    struct oscap_source *source = oscap_source_new_from_file(argv[2]);
                         ^~~~~~
/home/jcerny/openscap/tests/API/OVAL/test_api_syschar.c:40:24: note: shadowed declaration is here
   struct oscap_source *source = oscap_source_new_from_file(argv[1]);
                        ^~~~~~

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