Use alloc for no_std builds

[rust-lightning] / lightning / src / util / message_signing.rs

diff --git a/lightning/src/util/message_signing.rs b/lightning/src/util/message_signing.rs
index 1ad1ea5ed3571582dc67e8e4187c7d06175b2680..c39da1d533e51b7fbc0f94f30b1947040139be54 100644 (file)
--- a/lightning/src/util/message_signing.rs
+++ b/lightning/src/util/message_signing.rs
@@ -20,6 +20,7 @@
 //! https://lightning.readthedocs.io/lightning-signmessage.7.html
 //! https://api.lightning.community/#signmessage
 
+use prelude::*;
 use crate::util::zbase32;
 use bitcoin::hashes::{sha256d, Hash};
 use bitcoin::secp256k1::recovery::{RecoverableSignature, RecoveryId};