Missing call to sleep_disable?

[jdavid]

In WaspPWR::deepSleep there's first a call to sleep_enable();

If there's an error the function exits without calling sleep_disable():

https://github.com/Libelium/waspmoteapi/blob/master/waspmote-api/WaspPWR.cpp#L523

[Libelium]

Thanks again for your contribution, we will check the library.