Fix rfxtrx device id matching (#15819)

* Issue #15773

Fix PT2262 devices are incorrectly matched in rfxtrx component

* style

homeassistant/components/rfxtrx.py

@@ -166,6 +166,7 @@ def get_pt2262_device(device_id):
     """Look for the device which id matches the given device_id parameter."""
     for device in RFX_DEVICES.values():
         if (hasattr(device, 'is_lighting4') and
+                device.masked_id is not None and
                 device.masked_id == get_pt2262_deviceid(device_id,
                                                         device.data_bits)):
             _LOGGER.debug("rfxtrx: found matching device %s for %s",