[Bug] Return value of encoder fillsequence is not checked

[hhvrc]

https://github.com/OpenShock/Firmware/blob/develop/src/radio/RFTransmitter.cpp#L161
https://github.com/OpenShock/Firmware/blob/develop/src/radio/RFTransmitter.cpp#L169