Our pay code handles this correctly, but decode was still using an old model
where there was a payinfo per hop, not per path.
Reported-by: @t-bast
See: #5823
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Any file in this directory which is executable and whose name only
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automatically loaded when lightningd starts (unless suppressed with
commandline options).