The function oscap_source_validate_schematron is always called with the second parameter outfile set to NULL, therefore this parameter isn't needed and we can decide that the output will be printed to stdout. That allows further simplification of static functions in schematron.c.
The function
oscap_source_validate_schematronis always called with the second parameteroutfileset to NULL, therefore this parameter isn't needed and we can decide that the output will be printed to stdout. That allows further simplification of static functions in schematron.c.Fixes: #1720