f Correct long-since stale comments Jeff pointed out

Author: TheBlueMatt

lightning/src/ln/channelmanager.rs

@@ -3074,8 +3074,8 @@ impl<ChanSigner: ChannelKeys, M: Deref + Sync + Send, T: Deref + Sync + Send, K:
 		}
 
 		for (source, payment_hash, value) in timed_out_htlcs.drain(..) {
-			// Call it preimage_unknown as the issue, ultimately, is that the user failed to
-			// provide us a preimage within the cltv_expiry time window.
+			// Call it incorrect_or_unknown_payment_details as the issue, ultimately, is that the
+			// user failed to provide us a preimage within the cltv_expiry time window.
 			let mut htlc_msat_height_data = byte_utils::be64_to_array(value).to_vec();
 			htlc_msat_height_data.extend_from_slice(&byte_utils::be32_to_array(
 				self.latest_block_height.load(Ordering::Acquire) as u32,

lightning/src/util/events.rs

@@ -57,7 +57,7 @@ pub enum Event {
 	/// the amount expected.
 	/// If you fail to call either ChannelManager::claim_funds of
 	/// ChannelManager::fail_htlc_backwards within the HTLC's timeout, the HTLC will be
-	/// automatically failed with PaymentFailReason::PreimageUnknown.
+	/// automatically failed.
 	PaymentReceived {
 		/// The hash for which the preimage should be handed to the ChannelManager.
 		payment_hash: PaymentHash,