Added a typecast to make testserver build on Win.
Added a typecast to make testserver build on Win.

adeschamps/lcm,kyonifer/lcm,kyonifer/lcm,bluesquall/lcm,lcm-proj/lcm,lcm-proj/lcm,adeschamps/lcm,kyonifer/lcm,kyonifer/lcm,bluesquall/lcm,adeschamps/lcm,adeschamps/lcm,lcm-proj/lcm,bluesquall/lcm,lcm-proj/lcm,kyonifer/lcm,bluesquall/lcm,lcm-proj/lcm,bluesquall/lcm,kyonifer/lcm,adeschamps/lcm,kyonifer/lcm,adeschamps/lcm,lcm-proj/lcm,adeschamps/lcm,adeschamps/lcm,lcm-proj/lcm,lcm-proj/lcm,bluesquall/lcm,bluesquall/lcm