when fixing the len computing in 6c77e03376 I forgot to note that
since send_tree_entries_batch converts the struct
got_parsed_tree_entry to got_imsg_tree_entry, so instead of summing
all the fields we can use the size of the latter.

diff /home/op/w/gotd
commit - 7b771fb638e62245e029bcceaa32c0dce315b23c
path + /home/op/w/gotd
blob - 8954b4c42e443bbd5ba01b707de2fd26e6410d19
file + lib/privsep.c
--- lib/privsep.c
+++ lib/privsep.c
@@ -1451,8 +1451,7 @@ send_tree_entries(struct imsgbuf *ibuf, struct got_par
 	i = 0;
 	for (j = 0; j < nentries; j++) {
 		struct got_parsed_tree_entry *pte = &entries[j];
-		size_t len = SHA1_DIGEST_LENGTH + sizeof(pte->mode) +
-		    sizeof(pte->namelen) + pte->namelen;
+		size_t len = sizeof(struct got_imsg_tree_entry) + pte->namelen;
 
 		if (j > 0 &&
 		    entries_len + len > MAX_IMSGSIZE - IMSG_HEADER_SIZE) {