- use ACI state data credit available directly
- use ACI state data credit available directly

for some reason (maybe new compiler in Arduino 1.6.3?)
lib_aci_get_nb_available_credits is returning 0, even though structure
is at the same address

femtoduino/arduino-BLEPeripheral,pi19404/arduino-BLEPeripheral,possan/arduino-BLEPeripheral,sandeepmistry/arduino-BLEPeripheral,sandeepmistry/arduino-BLEPeripheral,possan/arduino-BLEPeripheral,femtoduino/arduino-BLEPeripheral,sandeepmistry/arduino-BLEPeripheral,pi19404/arduino-BLEPeripheral