Fix a buffer overflow on double width fuji images
Fix a buffer overflow on double width fuji images

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