Fixes a crash which was detected during troubleshooting of #62 which occurs when MQTT is not connected.
Note: Due to some unfortunate circumstances the cuda image will not be built with this fix.
Instead the fix will be included in 1.7.0 which should come a long shortly.
Docker images are available on Docker Hub
roflcoopter/viseron:1.6.2
roflcoopter/viseron-vaapi:1.6.2
roflcoopter/viseron-rpi:1.6.2