Raw Decoder: Ensure that input pitch == w, before using 12 bit decoder, and fix size calculation, broken in rev 227.
Raw Decoder: Ensure that input pitch == w, before using 12 bit decoder, and fix size calculation, broken in rev 227.

darktable-org/rawspeed,anarsoul/rawspeed,darktable-org/rawspeed,klauspost/rawspeed,mgehre/rawspeed,darktable-org/rawspeed,mgehre/rawspeed,LebedevRI/rawspeed,klauspost/rawspeed,anarsoul/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,anarsoul/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed