Derive Clone and Copy for CommandError, LogLevel, OtpMode

As these three enums are scalar values, this patch derives the Clone and
Copy traits for them.  This should avoid unnecessary allocations and
reduce the memory footprint.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/otp.rs b/src/otp.rs
index 801f52c..6f6bd80 100644
--- a/src/otp.rs
+++ b/src/otp.rs
@@ -5,7 +5,7 @@ use nitrokey_sys;
 use crate::util::{get_command_result, get_cstring, result_from_string, CommandError};
 
 /// Modes for one-time password generation.
-#[derive(Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, PartialEq)]
 pub enum OtpMode {
     /// Generate one-time passwords with six digits.
     SixDigits,