VC5Decompressor::decodeLargeCodeblock(): use roundUpDivision().
VC5Decompressor::decodeLargeCodeblock(): use roundUpDivision().

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