Merge pull request #873 from TheBlueMatt/2021-861-missing-eof-eol

Add missing EOF newline

Author: TheBlueMatt

lightning/src/chain/keysinterface.rs

@@ -1053,4 +1053,4 @@ impl KeysInterface for KeysManager {
 #[test]
 pub fn dyn_sign() {
 	let _signer: Box<dyn BaseSign>;
-}
+}