VC5Decompressor::Wavelet::combineLowHighPass(): avoid global x/y variables
VC5Decompressor::Wavelet::combineLowHighPass(): avoid global x/y variables

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