g722enc: switch to ff_alloc_packet2()

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

libavcodec/g722enc.c

@@ -366,8 +366,7 @@ static int g722_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
     int nb_samples, out_size, ret;
 
     out_size = (frame->nb_samples + 1) / 2;
-    if ((ret = ff_alloc_packet(avpkt, out_size))) {
-        av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
+    if ((ret = ff_alloc_packet2(avctx, avpkt, out_size))) {
         return ret;
     }