f fix panic msg, reduce indent

Author: TheBlueMatt

lightning/src/ln/channelmanager.rs

@@ -3181,19 +3181,18 @@ impl<M: Deref, T: Deref, K: Deref, F: Deref, L: Deref> ChannelManager<M, T, K, F
 									},
 									HTLCForwardInfo::FailHTLC { htlc_id, err_packet } => {
 										log_trace!(self.logger, "Failing HTLC back to channel with short id {} (backward HTLC ID {}) after delay", short_chan_id, htlc_id);
-										match chan.get_mut().queue_fail_htlc(htlc_id, err_packet, &self.logger) {
-											Err(e) => {
-												if let ChannelError::Ignore(msg) = e {
-													log_trace!(self.logger, "Failed to fail HTLC with ID {} backwards to short_id {}: {}", htlc_id, short_chan_id, msg);
-												} else {
-													panic!("Stated return value requirements in get_update_fail_htlc() were not met");
-												}
-												// fail-backs are best-effort, we probably already have one
-												// pending, and if not that's OK, if not, the channel is on
-												// the chain and sending the HTLC-Timeout is their problem.
-												continue;
-											},
-											Ok(()) => { },
+										if let Err(e) = chan.get_mut().queue_fail_htlc(
+											htlc_id, err_packet, &self.logger
+										) {
+											if let ChannelError::Ignore(msg) = e {
+												log_trace!(self.logger, "Failed to fail HTLC with ID {} backwards to short_id {}: {}", htlc_id, short_chan_id, msg);
+											} else {
+												panic!("Stated return value requirements in queue_fail_htlc() were not met");
+											}
+											// fail-backs are best-effort, we probably already have one
+											// pending, and if not that's OK, if not, the channel is on
+											// the chain and sending the HTLC-Timeout is their problem.
+											continue;
 										}
 									},
 								}