Clearer error message when there is no channel waiting to be accepted.

Author: waterson

lightning/src/ln/channelmanager.rs

@@ -5201,7 +5201,7 @@ where
           &unaccepted_channel.open_channel_msg, user_channel_id, &self.default_configuration, best_block_height,
 					&self.logger, unaccepted_channel.outbound_scid_alias).map_err(|e| APIError::ChannelUnavailable { err: e.to_string() })
 			}
-			_ => Err(APIError::APIMisuseError { err: "The channel isn't currently awaiting to be accepted.".to_owned() })
+			_ => Err(APIError::APIMisuseError { err: "No such channel awaiting to be accepted.".to_owned() })
 		}?;
 
 		if accept_0conf {

lightning/src/ln/functional_tests.rs

@@ -7964,7 +7964,7 @@ fn test_can_not_accept_inbound_channel_twice() {
 			let api_res = nodes[1].node.accept_inbound_channel(&temporary_channel_id, &nodes[0].node.get_our_node_id(), 0);
 			match api_res {
 				Err(APIError::APIMisuseError { err }) => {
-					assert_eq!(err, "The channel isn't currently awaiting to be accepted.");
+					assert_eq!(err, "No such channel awaiting to be accepted.");
 				},
 				Ok(_) => panic!("Channel shouldn't be possible to be accepted twice"),
 				Err(e) => panic!("Unexpected Error {:?}", e),
@@ -7996,7 +7996,7 @@ fn test_can_not_accept_unknown_inbound_channel() {
 	let api_res = nodes[0].node.accept_inbound_channel(&unknown_channel_id, &nodes[1].node.get_our_node_id(), 0);
 	match api_res {
 		Err(APIError::APIMisuseError { err }) => {
-			assert_eq!(err, "The channel isn't currently awaiting to be accepted.");
+			assert_eq!(err, "No such channel awaiting to be accepted.");
 		},
 		Ok(_) => panic!("It shouldn't be possible to accept an unkown channel"),
 		Err(e) => panic!("Unexpected Error: {:?}", e),