Handle event_queue push failure in PaymentFailed.

Author: G8XSU

src/event.rs

@@ -901,16 +901,16 @@ where
 						return Err(ReplayEvent());
 					},
 				};
-				self.event_queue
-					.add_event(Event::PaymentFailed {
-						payment_id: Some(payment_id),
-						payment_hash,
-						reason,
-					})
-					.unwrap_or_else(|e| {
+
+				let event =
+					Event::PaymentFailed { payment_id: Some(payment_id), payment_hash, reason };
+				match self.event_queue.add_event(event) {
+					Ok(_) => return Ok(()),
+					Err(e) => {
 						log_error!(self.logger, "Failed to push to event queue: {}", e);
-						panic!("Failed to push to event queue");
-					});
+						return Err(ReplayEvent());
+					},
+				};
 			},
 
 			LdkEvent::PaymentPathSuccessful { .. } => {},