Fix for advertised service data not working

[sandeepmistry]

Test sketch:

#include <ArduinoBLE.h>

BLEService myService("fff0");
BLEIntCharacteristic myCharacteristic("fff1", BLERead | BLEBroadcast);

int count = 0;

void setup() {
  Serial.begin(9600);
  while (!Serial);

  if (!BLE.begin()) {
    Serial.println("failed to initialize BLE!");
    while (1);
  }

  myService.addCharacteristic(myCharacteristic);
  BLE.addService(myService);

  BLE.setAdvertisedService(myService);
  BLE.advertise();

  Serial.println("advertising ...");

  myCharacteristic.broadcast();
}

void loop() {
  BLE.poll();

  count++;

  myCharacteristic.writeValue(count);


  delay(100);
}