Memory leak fixes

Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/options.h b/options.h
index c6c2086..ed6b9c2 100644
--- a/options.h
+++ b/options.h
@@ -15,6 +15,8 @@
 
 void add_opt_posval(const char *, const char *, const char *);
 void del_opt_posval(const char *, const char *);
+struct thread_data;
+void fio_options_free(struct thread_data *);
 
 static inline int o_match(struct fio_option *o, const char *opt)
 {