demux: ts: fix IOD parsing (fix #11573)

IOD bytes must be read in order.
introduced by 8fdf1f20beb53ec72b7f2a903071857596ce0d72
Revert "codec: faad: fail if no extradata"

breaks with IV in first packet as pointed out by funman
This reverts commit ccc273b48cef823e1536d80904c1e080cac4f1aa.