lib/selection_iter.c: fix the last stand switch to UDP

Previously, qry->flags.TCP flag was incorectly set, which led
to incorrect logging and maybe other troubles down the line.

lib/selection_iter.c

@@ -286,11 +286,12 @@ void iter_choose_transport(struct kr_query *qry, struct kr_transport **transport
 		}
 
 		if (*transport &&
-		    (*transport)->protocol==KR_TRANSPORT_TCP &&
+		    (*transport)->protocol == KR_TRANSPORT_TCP &&
 		    !qry->server_selection.local_state->truncated &&
 		    qry->server_selection.local_state->force_udp) {
 			// Last chance on broken TCP.
 			(*transport)->protocol = KR_TRANSPORT_UDP;
+			qry->flags.TCP = false;
 		}
 	}