git-imap-send: simplify tunnel construction

Signed-off-by: Bernhard Reiter <ockham@raz.or.at>
Reviewed-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

imap-send.c

@@ -961,17 +961,16 @@ static struct imap_store *imap_open_store(struct imap_server_conf *srvc)
 	/* open connection to IMAP server */
 
 	if (srvc->tunnel) {
-		const char *argv[] = { srvc->tunnel, NULL };
 		struct child_process tunnel = {NULL};
 
 		imap_info("Starting tunnel '%s'... ", srvc->tunnel);
 
-		tunnel.argv = argv;
+		argv_array_push(&tunnel.args, srvc->tunnel);
 		tunnel.use_shell = 1;
 		tunnel.in = -1;
 		tunnel.out = -1;
 		if (start_command(&tunnel))
-			die("cannot start proxy %s", argv[0]);
+			die("cannot start proxy %s", srvc->tunnel);
 
 		imap->buf.sock.fd[0] = tunnel.out;
 		imap->buf.sock.fd[1] = tunnel.in;