bundle2datalink
if (bundle2datalink(bundle, name)) {
extern struct datalink *bundle2datalink(struct bundle *, const char *);
cx = bundle2datalink(bundle, NULL);
arg->cx : bundle2datalink(arg->bundle, NULL);
if (!bundle2datalink(arg->bundle, name)) {
cx = bundle2datalink(arg->bundle, name);
struct datalink *dl = bundle2datalink(arg->bundle, NULL);
cx = bundle2datalink(arg->bundle, NULL);