avcodec/j2kenc: remove misleading pred value

This field is only checked for being 0 or not and not zero means 5/3

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/j2kenc.c

@@ -1729,7 +1729,7 @@ static av_cold int j2kenc_init(AVCodecContext *avctx)
 
     if (avctx->pix_fmt == AV_PIX_FMT_PAL8 && (s->pred != FF_DWT97_INT || s->format != CODEC_JP2)) {
         av_log(s->avctx, AV_LOG_WARNING, "Forcing lossless jp2 for pal8\n");
-        s->pred = FF_DWT97_INT;
+        s->pred = 1;
         s->format = CODEC_JP2;
     }