CID 350473: Null pointer dereferences (FORWARD_NULL) in bin/dig/dighost.c: 2904 in udp_ready()

/bin/dig/dighost.c: 2904 in udp_ready()
2898     
2899     	if (eresult == ISC_R_CANCELED || query->canceled) {
2900     		dig_lookup_t *l = query->lookup;
2901     
2902     		debug("in cancel handler");
2903     		query_detach(&query);
   CID 350473:  Null pointer dereferences  (FORWARD_NULL)
   Dereferencing null pointer "query".
2904     		if (!query->canceled) {
2905     			cancel_lookup(l);
2906     		}
2907     		lookup_detach(&l);
2908     		return;
2909     	} else if (eresult != ISC_R_SUCCESS) {