Do no release the AVFrame when using reget_buffer in flashsv.

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@19834 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/flashsv.c

@@ -114,9 +114,6 @@ static int flashsv_decode_frame(AVCodecContext *avctx,
     if (buf_size == 0)
         return 0;
 
-    if(s->frame.data[0])
-            avctx->release_buffer(avctx, &s->frame);
-
     init_get_bits(&gb, buf, buf_size * 8);
 
     /* start to parse the bitstream */