ljpegenc: switch to ff_alloc_packet2().

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/ljpegenc.c

@@ -57,8 +57,7 @@ static int encode_picture_lossless(AVCodecContext *avctx, AVPacket *pkt,
         max_pkt_size += mb_width * mb_height * 3 * 4
                         * s->mjpeg_hsample[0] * s->mjpeg_vsample[0];
     }
-    if ((ret = ff_alloc_packet(pkt, max_pkt_size)) < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Error getting output packet of size %d.\n", max_pkt_size);
+    if ((ret = ff_alloc_packet2(avctx, pkt, max_pkt_size)) < 0) {
         return ret;
     }