add check for parse_cfg function

programs/cmp_io.c

@@ -552,9 +552,10 @@ static int parse_cfg(FILE *fp, struct cmp_cfg *cfg, struct cmp_par *par)
 
 	if (!fp)
 		abort();
-
 	if (!cfg)
 		abort();
+	if(!par)
+		abort();
 
 	while (fgets(line, sizeof(line), fp) != NULL) {
 		if (line[0] == '#' || line[0] == '\n')