f Don't assert but return error

Author: tnull

lightning/src/ln/onion_utils.rs

@@ -285,7 +285,9 @@ fn construct_onion_packet_with_init_noise<HD: Writeable, P: Packet>(
 			let mut payload_len = LengthCalculatingWriter(0);
 			payload.write(&mut payload_len).expect("Failed to calculate length");
 			pos += payload_len.0 + 32;
-			assert!(pos <= packet_data.len());
+			if pos > packet_data.len() {
+				return Err(());
+			}
 
 			res.resize(pos, 0u8);
 			chacha.process_in_place(&mut res);