Subject: [PATCH 3/4] fetch_refs_via_pack: free extra copy of refs

From: Jeff King <[email-masked]>
Date: Thu, 19 Mar 2015 16:38:35 -0400

When fetch_refs_via_pack calls fetch_pack(), we pass a
list of refs to fetch, and the function returns either a
copy of that list, with the fetched items filled in, or
NULL. We check the return value to see whether the fetch was
successful, but do not otherwise look at the copy, and
simply leak it at the end of the function.

Signed-off-by: Jeff King <[email-masked]>
---
Without patch 2, this segfaults in t5516. :)

 transport.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/transport.c b/transport.c
index 0694a7c..b1953b2 100644
--- a/transport.c
+++ b/transport.c
@@ -519,7 +519,7 @@ static int fetch_refs_via_pack(struct transport *transport,
 			       int nr_heads, struct ref **to_fetch)
 {
 	struct git_transport_data *data = transport->data;
-	const struct ref *refs;
+	struct ref *refs;
 	char *dest = xstrdup(transport->url);
 	struct fetch_pack_args args;
 	struct ref *refs_tmp = NULL;
@@ -552,15 +552,17 @@ static int fetch_refs_via_pack(struct transport *transport,
 			  &transport->pack_lockfile);
 	close(data->fd[0]);
 	close(data->fd[1]);
-	if (finish_connect(data->conn))
+	if (finish_connect(data->conn)) {
+		free_refs(refs);
 		refs = NULL;
+	}
 	data->conn = NULL;
 	data->got_remote_heads = 0;
 	data->options.self_contained_and_connected =
 		args.self_contained_and_connected;
 
 	free_refs(refs_tmp);
-
+	free_refs(refs);
 	free(dest);
 	return (refs ? 0 : -1);
 }
-- 
2.3.3.520.g3cfbb5d