Merge branch 'jk/protocol-cap-parse-fix'

The code to parse capability list for v0 on-wire protocol fell into
an infinite loop when a capability appears multiple times, which
has been corrected.

* jk/protocol-cap-parse-fix:
  v0 protocol: use size_t for capability length/offset
  t5512: test "ls-remote --heads --symref" filtering with v0 and v2
  t5512: allow any protocol version for filtered symref test
  t5512: add v2 support for "ls-remote --symref" test
  v0 protocol: fix sha1/sha256 confusion for capabilities^{}
  t5512: stop referring to "v1" protocol
  v0 protocol: fix infinite loop when parsing multi-valued capabilities

transport.c

@@ -320,7 +320,7 @@ static struct ref *handshake(struct transport *transport, int for_push,
 	struct git_transport_data *data = transport->data;
 	struct ref *refs = NULL;
 	struct packet_reader reader;
-	int sid_len;
+	size_t sid_len;
 	const char *server_sid;
 
 	connect_setup(transport, for_push);