rtp: use VLC_TS_INVALID

modules/access/rtp/rtp.c

@@ -423,7 +423,7 @@ static void codec_decode (demux_t *demux, void *data, block_t *block)
 {
     if (data)
     {
-        block->i_dts = 0; /* RTP does not specify this */
+        block->i_dts = VLC_TS_INVALID; /* RTP does not specify this */
         es_out_Control (demux->out, ES_OUT_SET_PCR, block->i_pts );
         es_out_Send (demux->out, (es_out_id_t *)data, block);
     }

modules/access/rtp/session.c

@@ -168,7 +168,7 @@ rtp_source_create (demux_t *demux, const rtp_session_t *session,
     source->ssrc = ssrc;
     source->jitter = 0;
     source->ref_rtp = 0;
-    /* TODO: use 0, but VLC does not like negative PTS at the moment */
+    /* TODO: use VLC_TS_0, but VLC does not like negative PTS at the moment */
     source->ref_ntp = UINT64_C (1) << 62;
     source->max_seq = source->bad_seq = init_seq;
     source->last_seq = init_seq - 1;