Fix threadHelper return value
Fix threadHelper return value

myriadrf/LimeSuite,myriadrf/LimeSuite,limemicro/lms7suite,myriadrf/LimeSuite,limemicro/lms7suite,limemicro/lms7suite,myriadrf/LimeSuite,myriadrf/LimeSuite,limemicro/lms7suite,limemicro/lms7suite