work around bug on ble_nus.c that meant is got confused by central role events
work around bug on ble_nus.c that meant is got confused by central role events

luetgendorf/Espruino,wilberforce/Espruino,lancernet/Espruino,wilberforce/Espruino,lancernet/Espruino,wilberforce/Espruino,luetgendorf/Espruino,luetgendorf/Espruino,lancernet/Espruino,wilberforce/Espruino,luetgendorf/Espruino,lancernet/Espruino,luetgendorf/Espruino,lancernet/Espruino,luetgendorf/Espruino,wilberforce/Espruino,lancernet/Espruino,wilberforce/Espruino,lancernet/Espruino,wilberforce/Espruino,luetgendorf/Espruino