tools/xenstore: remove all watches when a domain has stopped

When a domain has been released by Xen tools, remove all its
registered watches. This avoids sending watch events to the dead domain
when all the nodes related to it are being removed by the Xen tools.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Julien Grall <jgrall@amazon.com>

tools/xenstore/xenstored_domain.c

@@ -740,6 +740,9 @@ int do_release(const void *ctx, struct connection *conn,
 	if (IS_ERR(domain))
 		return -PTR_ERR(domain);
 
+	/* Avoid triggering watch events when the domain's nodes are deleted. */
+	conn_delete_all_watches(domain->conn);
+
 	talloc_free(domain->conn);
 
 	send_ack(conn, XS_RELEASE);