codec/schroedinger: don't reset decoder at corrupt block sentinel

Also, don't reset pts interpolator at discontinuity
Signed-off-by: David Flynn <davidf@rd.bbc.co.uk>
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

modules/codec/schroedinger.c

@@ -300,11 +300,9 @@ static picture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
 
         /* reset the decoder when seeking as the decode in progress is invalid */
         /* discard the block as it is just a null magic block */
-        if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) ) {
+        if( p_block->i_flags & BLOCK_FLAG_DISCONTINUITY ) {
             schro_decoder_reset( p_sys->p_schro );
 
-            p_sys->i_lastpts = -1;
-
             block_Release( p_block );
             *pp_block = NULL;
             return NULL;