Merge commit 'db21dde3'

* commit 'db21dde3':
  qsvdec_mpeg2: drop an incorrect comment

Conflicts:
	libavcodec/qsvdec_mpeg2.c

No change as the removed comment was not in libavcodec/qsvdec_mpeg2.c
Merged-by: NMichael Niedermayer <michael@niedermayer.cc>