* commit 'f53490cc':
  rtpdec/srtp: Handle CSRC fields being present
  rtpdec: Check the return value from av_new_packet
  ac3dec: fix non-optimal dithering of zero bit mantissas

Conflicts:
	libavcodec/ac3dec.c
	libavformat/rtpdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>