stash: mark unused parameter in diff callback

This is similar to the cases in 61bdc7c5d8 (diff: mark unused parameters in callbacks, 2022-12-13), but I missed it when making that commit. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Jeff King committed Aug 29, 2023 at 19:45 UTC 71006d77c5d02fff51e036919632c5e3dad5d551
1 file changed +1 -1
builtin/stash.c
+1 -1
@@ -362,7 +362,7 @@ static int is_path_a_directory(const char *path)
362 }
363
364 static void add_diff_to_buf(struct diff_queue_struct *q,
365 - struct diff_options *options,
365 + struct diff_options *options UNUSED,
366 void *data)
367 {
368 int i;