Merge pull request #251 from davisk4rpi/ble-unavailable-state-update

fix(android): Resets bluetooth state after disconnecting from the only available headset

Author: zxcpoiu

android/src/main/java/com/zxcpoiu/incallmanager/AppRTC/AppRTCBluetoothManager.java

@@ -145,6 +145,7 @@ private void updateDeviceList() {
       boolean needChange = false;
       if (bluetoothAudioDevice != null && newBtDevice == null) {
         needChange = true;
+        bluetoothState = State.HEADSET_UNAVAILABLE;
       } else if (bluetoothAudioDevice == null && newBtDevice != null) {
         needChange = true;
       } else if (bluetoothAudioDevice != null && bluetoothAudioDevice.getId() != newBtDevice.getId()) {