MQTT topic received by Espruino sometimes malformed

@Gordon

I've commented out the calls to update the neopixel and I'm still getting strange chars appearing. Although it did fix my issue with the basic example, oddly I can still replicate this without the neopixel writes.

I am debugging the wifi data and these chars do come through there it seems:

\u0007\u0000\u0004door1\u0090\u0003\u00F­BJ\u00001\f\u0000\toccupancy0\u0090\u000­3\u00FBK\u00001\u0012\u0000\u000Btempera­ture19.27

Which when decoded:

door1ûJ1	occupancy0ûK1temperature19.27

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