Memory leak fixes

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/parse.h b/parse.h
index f2265a4..cb0b48f 100644
--- a/parse.h
+++ b/parse.h
@@ -72,6 +72,7 @@
 extern void fill_default_options(void *, struct fio_option *);
 extern void option_init(struct fio_option *);
 extern void options_init(struct fio_option *);
+extern void options_free(struct fio_option *, void *);
 
 extern void strip_blank_front(char **);
 extern void strip_blank_end(char *);