lnwire: encode channel_update type in onion errors #7665
Merged
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For about a year, the spec has prescribed encoding
channel_updates
with their type prefix (0x0102
) in onion failure messages. LND can decode correctly with or without the prefix but hasn't been writing the prefix during encoding. This PR starts writing the prefix.I ran across this while running some new encoding/decoding fuzz tests for onion errors, which I intend to submit in a separate PR. Those fuzz tests offer additional regression testing for this change.
Resolves #6461.