roqvideoenc: switch to ff_alloc_packet2()

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

libavcodec/roqvideoenc.c

@@ -1020,8 +1020,7 @@ static int roq_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
     /* 138 bits max per 8x8 block +
      *     256 codebooks*(6 bytes 2x2 + 4 bytes 4x4) + 8 bytes frame header */
     size = ((enc->width * enc->height / 64) * 138 + 7) / 8 + 256 * (6 + 4) + 8;
-    if ((ret = ff_alloc_packet(pkt, size)) < 0) {
-        av_log(avctx, AV_LOG_ERROR, "Error getting output packet with size %d.\n", size);
+    if ((ret = ff_alloc_packet2(avctx, pkt, size)) < 0) {
         return ret;
     }
     enc->out_buf = pkt->data;