Might be missing degree in oC

[Anto79-ops]

Hi, Just updated to 1.8, and noticed this on my HA logs

Logger: homeassistant.components.sensor
Source: components/sensor/__init__.py:677
Integration: Sensor (documentation, issues)
First occurred: 8:20:30 PM (1 occurrences)
Last logged: 8:20:30 PM

Entity sensor.rpi_temp_raspberrypi_2 (<class 'homeassistant.components.mqtt.sensor.MqttSensor'>) is using native unit of measurement 'C' which is not a valid unit for the device class ('temperature') it is using; expected one of ['°F', 'K', '°C']; Please update your configuration if your entity is manually configured, otherwise create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue+label%3A%22integration%3A+mqtt%22

And this

[ironsheep]

@Anto79-ops ok, looking into it!

[ironsheep]

Fixes committed and avail. in v1.8.1 and later.