DngDecoder: some more checks for getFloatArray() -> iPoint2D conversions
DngDecoder: some more checks for getFloatArray() -> iPoint2D conversions

LebedevRI/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed