Merge commit '57070b1468edc6ac8cb3696c817f3c943975d4c1'

* commit '57070b1468edc6ac8cb3696c817f3c943975d4c1':
  flashsv: Check diff_start diff_height values

Conflicts:
	libavcodec/flashsv.c

See: 880c73cd76109697447fbfbaa8e5ee5683309446
Merged-by: Michael Niedermayer <michaelni@gmx.at>

diff --cc libavcodec/flashsv.c
Simple merge