Merge commit 'adb0e941'

* commit 'adb0e941':
  avpacket: Mark src pointer as constant

See 5bb3f882Merged-by: Clément Bœsch <u@pkh.me>

libavcodec/avcodec.h

@@ -4452,7 +4452,7 @@ AVPacket *av_packet_alloc(void);
  * @see av_packet_alloc
  * @see av_packet_ref
  */
-AVPacket *av_packet_clone(AVPacket *src);
+AVPacket *av_packet_clone(const AVPacket *src);
 
 /**
  * Free the packet, if the packet is reference counted, it will be

libavcodec/avpacket.c

@@ -614,7 +614,7 @@ fail:
     return ret;
 }
 
-AVPacket *av_packet_clone(AVPacket *src)
+AVPacket *av_packet_clone(const AVPacket *src)
 {
     AVPacket *ret = av_packet_alloc();