soapy lms - fix writeSetting to not throw every time
soapy lms - fix writeSetting to not throw every time

WriteParam is called in the else statement,
so we only throw when WriteParam fails,
just like in the readSetting() call

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