f Document duplicate manual claims

Clarify that claiming duplicate PaymentClaimable events accepts each
payment, so unexpected duplicate or late payments should be failed.

Co-Authored-By: HAL 9000

Author: tnull

src/event.rs

@@ -208,6 +208,9 @@ pub enum Event {
 	/// holder of a valid invoice generated by this node tie up inbound HTLC slots and grow the
 	/// persisted event queue until the payment is claimed, failed, or times out.
 	///
+	/// If the same payment hash is paid more than once, claiming each event accepts each
+	/// payment. Unexpected duplicate or late payments should be failed back.
+	///
 	/// Any `_for_hash` invoices created with LDK Node v0.7 or prior can still emit this event
 	/// after upgrade and must be claimed or failed back regardless of the config setting.
 	///