Set this.connectRequest to null after notifying success.

Author: Grega Podlesek

ble/src/main/java/no/nordicsemi/android/ble/BleManagerHandler.java

@@ -744,6 +744,7 @@ private boolean internalConnect(@NonNull final BluetoothDevice device,
 
 		if (autoConnect && this.connectRequest != null) {
 			this.connectRequest.notifySuccess(device);
+			this.connectRequest = null;
 		}
 		return true;
 	}