Bug#697073: dcmtk: dcmdjpeg fails to decode a lossless JPEG

[Mathieu Malaterre]

Control: fixed -1 3.6.7-5

See upstream commit: deeda9adbcc148003aa36dc336fcefa4e004cbb2 (and
497043a84df12b85e736c1228f73e0f919926de0)