Possible fix for reading file size on cifs shares.
Possible fix for reading file size on cifs shares.

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