Add Fast-Close in case of fees spikes

Author: Antoine Riard

lightning/src/ln/channel.rs

@@ -4339,6 +4339,8 @@ impl<Signer: Sign> Channel<Signer> {
 
 		self.update_time_counter = cmp::max(self.update_time_counter, highest_header_time);
 
+		self.autoclose_timestamp = highest_header_time as u64;
+
 		if let Some(funding_locked) = self.check_get_funding_locked(height) {
 			log_info!(logger, "Sending a funding_locked to our peer for channel {}", log_bytes!(self.channel_id));
 			return Ok((Some(funding_locked), timed_out_htlcs));