Unhandled new events bug (#487) was not fixed in ttn-otaa.ino

[lnlp]

See #487

DIfferent from what is stated in #487, in v3.1.0 this bug has still not been fixed for example ttn-otaa.ino.

Events EV_TXCANCELED, EV_RXSTART and EV_JOIN_TXCOMPLETE are still unhandled and are therefore reported as unknown event.

Other examples were fixed but it appears that ttn-otaa.ino was missed.

[terrillmoore]

@lnlp yes, sorry. I didn't have time to test all the examples.

[terrillmoore]

Grep shows that this affects the following files:

• examples/header_test/header_test.ino (not applicable)
• examples/raw/raw.ino (not applicable)
• examples/raw-feather/raw-feather.ino (not applicable)
• examples/raw-halconfig/raw-halconfig.ino (not applicable)
• examples/ttn-otaa/ttn-otaa.ino