impl Display instead of to_string directly

Author: johncantrell97

orange-sdk/src/ffi/ldk_node.rs

@@ -37,9 +37,11 @@ impl Mnemonic {
 			Err(_) => Err(ConfigError::InvalidMnemonic),
 		}
 	}
+}
 
-	pub fn to_string(&self) -> String {
-		self.0.to_string()
+impl std::fmt::Display for Mnemonic {
+	fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+		write!(f, "{}", self.0)
 	}
 }