#144 E2K: fixed build by MCST lcc compiler (MCST Elbrus 2000 architecture)

[Ramil Sattarov]

Fixed build by MCST lcc (eLbrus C/C++) compiler on e2k (MCST Elbrus 2000) architecture

About e2k
Ref: https://en.wikipedia.org/wiki/Elbrus_2000

This is backport from OpenEXR
Ref: https://github.com/AcademySoftwareFoundation/openexr/pull/862

The patch was accepted in the unofficial GitHub repository
Ref: https://github.com/WinMerge/freeimage/pull/10