Handle event_queue push failure in PaymentClaimable.

Author: G8XSU

src/event.rs

@@ -583,22 +583,22 @@ where
 									"We would have registered the preimage if we knew"
 								);
 
-								self.event_queue
-									.add_event(Event::PaymentClaimable {
-										payment_id,
-										payment_hash,
-										claimable_amount_msat: amount_msat,
-										claim_deadline,
-									})
-									.unwrap_or_else(|e| {
+								return match self.event_queue.add_event(Event::PaymentClaimable {
+									payment_id,
+									payment_hash,
+									claimable_amount_msat: amount_msat,
+									claim_deadline,
+								}) {
+									Ok(_) => Ok(()),
+									Err(e) => {
 										log_error!(
 											self.logger,
 											"Failed to push to event queue: {}",
 											e
 										);
-										panic!("Failed to push to event queue");
-									});
-								return Ok(());
+										Err(ReplayEvent())
+									},
+								};
 							}
 						},
 						_ => {},