Strenghten the Filemap bounds checks
Strenghten the Filemap bounds checks

Integer overflow is tricky. Make sure offset+size never
overflows by doing the calculation in 64bits.

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