av_destruct_packet_nofree deprecation explained in APIchanges

Originally committed as revision 18468 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/APIchanges

@@ -12,6 +12,10 @@ libavutil:   2009-03-08
 
 API changes, most recent first:
 
+2009-04-11 - r18431 - lavc 52.25.0 - deprecate av_destruct_packet_nofree
+  Please use NULL instead. This has been supported since r16506
+  (lavf > 52.23.1, lavc > 52.10.0).
+
 2009-04-07 - r18351 - lavc 52.23.0 - avcodec_decode_video/audio/subtitle
   The old decoding functions are deprecated, all new code should use the
   new functions avcodec_decode_video2(), avcodec_decode_audio3() and