Events arriving from SoftDevice when no adapter object exists crashes the application

[kenr]

In these situations where an adapter is not found, the application is crashed. This situation happens if closing/opening adapter, or if an error has occurred previously and the adapter is opened again. Perhaps this should be seen in conjunction with #90.

pc-ble-driver-js/src/driver.cpp

Line 129 in 749089a

std::terminate();

pc-ble-driver-js/src/driver.cpp

Line 180 in 749089a

std::terminate();

pc-ble-driver-js/src/driver.cpp

Line 207 in 749089a

std::terminate();

pc-ble-driver-js/src/driver.cpp

Line 395 in 749089a

std::terminate();