ff_alloc_packet: modify the size of the packet to match the requested size

This will simplify encoders which use this function to request the exact
packet size rather than the maximum size.

1 files changed, 1 insertions, 3 deletions

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 34eff0031a..606537b29a 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -839,16 +839,14 @@ int ff_alloc_packet(AVPacket *avpkt, int size)
 
     if (avpkt->data) {
         uint8_t *pkt_data;
-        int pkt_size;
 
         if (avpkt->size < size)
             return AVERROR(EINVAL);
 
         pkt_data = avpkt->data;
-        pkt_size = avpkt->size;
         av_init_packet(avpkt);
         avpkt->data = pkt_data;
-        avpkt->size = pkt_size;
+        avpkt->size = size;
         return 0;
     } else {
         return av_new_packet(avpkt, size);