transcode: set pointers to NULL rather than 0

modules/stream_out/transcode/video.c

@@ -127,10 +127,9 @@ int transcode_video_new( sout_stream_t *p_stream, sout_stream_id_sys_t *id )
      */
     id->p_decoder->fmt_out = id->p_decoder->fmt_in;
     id->p_decoder->fmt_out.i_extra = 0;
-    id->p_decoder->fmt_out.p_extra = 0;
+    id->p_decoder->fmt_out.p_extra = NULL;
     id->p_decoder->pf_decode_video = NULL;
     id->p_decoder->pf_get_cc = NULL;
-    id->p_decoder->pf_get_cc = 0;
     id->p_decoder->pf_vout_format_update = video_update_format_decoder;
     id->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
     id->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );