Used VLC_TS_0 in dirac demuxer.

modules/demux/dirac.c

@@ -176,12 +176,7 @@ static int Demux( demux_t *p_demux)
             p_sys->i_state++;
             /* by default, timestamps are invalid.
              * Except when we need an anchor point */
-#if VLC_TS_INVALID == 0
-            /* xxx: to be removed in 1.1 */
-            p_block_in->i_dts = 1;
-#else
-            p_block_in->i_dts = 0;
-#endif
+            p_block_in->i_dts = VLC_TS_0;
         }
     }