[master] 2f442d974 Ssize_t is a better choice than int64_t

[Poul-Henning Kamp]

commit 2f442d974820857c495060a96e6b7d4003ac11e1
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Tue Dec 6 18:23:16 2022 +0000

    Ssize_t is a better choice than int64_t

diff --git a/bin/varnishd/cache/cache_filter.h b/bin/varnishd/cache/cache_filter.h
index eb9a8f325..6ec82e0f4 100644
--- a/bin/varnishd/cache/cache_filter.h
+++ b/bin/varnishd/cache/cache_filter.h
@@ -63,7 +63,7 @@ struct vfp_entry {
 	enum vfp_status		closed;
 	const struct vfp	*vfp;
 	void			*priv1;
-	int64_t			priv2;
+	ssize_t			priv2;
 	VTAILQ_ENTRY(vfp_entry)	list;
 	uint64_t		calls;
 	uint64_t		bytes_out;