usb causes crash on handshake

[stokie-ant]

When building from latest git source accessing usb causes the program to crash. Tracked it down to src\dso_usbd.cpp in cdcEventHandler() there is a switch which is missing a lnUsbCDC::CDC_WRITE_AVAILABLE case so it falls through to xAssert().

would you like this as a pull?

Awesome firmware btw. Really well done

[mean00]

Hi,
Nice catch, an API change that was not propagated.
Yes a MR would be great.