sctp: avoid compiler warning on implicit fallthru

These fall-through are expected.
Signed-off-by: NMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: NNeil Horman <nhorman@tuxdriver.com>
Reviewed-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/sctp/ipv6.c

@@ -826,6 +826,7 @@ static int sctp_inet6_af_supported(sa_family_t family, struct sctp_sock *sp)
 	case AF_INET:
 		if (!__ipv6_only_sock(sctp_opt2sk(sp)))
 			return 1;
+		/* fallthru */
 	default:
 		return 0;
 	}

net/sctp/outqueue.c

@@ -918,9 +918,9 @@ static void sctp_outq_flush(struct sctp_outq *q, int rtx_timeout, gfp_t gfp)
 			break;
 
 		case SCTP_CID_ABORT:
-			if (sctp_test_T_bit(chunk)) {
+			if (sctp_test_T_bit(chunk))
 				packet->vtag = asoc->c.my_vtag;
-			}
+			/* fallthru */
 		/* The following chunks are "response" chunks, i.e.
 		 * they are generated in response to something we
 		 * received.  If we are sending these, then we can