Initialise the request ID in xs_talkv, to silence valgrind. We're not actually

using this value at the moment -- it's only there for use by future clients.

Signed-off-by: Ewan Mellor <ewan@xensource.com>

tools/xenstore/xs.c

@@ -305,6 +305,7 @@ static void *xs_talkv(struct xs_handle *h, struct xs_transaction_handle *t,
 	struct sigaction ignorepipe, oldact;
 
 	msg.tx_id = (uint32_t)(unsigned long)t;
+	msg.req_id = 0;
 	msg.type = type;
 	msg.len = 0;
 	for (i = 0; i < num_vecs; i++)