linter fixes

src/shim/crypto.rs

@@ -102,13 +102,17 @@ impl Signature {
             anyhow::bail!("Empty signature bytes");
         }
 
+        let first_byte = bytes
+            .first()
+            .ok_or_else(|| anyhow::anyhow!("Invalid signature bytes"))?;
+
         let signature_data = bytes
             .get(1..)
-            .ok_or_else(|| anyhow::anyhow!("Signature bytes too short"))?
+            .ok_or_else(|| anyhow::anyhow!("Invalid signature bytes"))?
             .to_vec();
 
         // first byte in signature represents the signature type
-        let sig_type = SignatureType::try_from(bytes[0])?;
+        let sig_type = SignatureType::try_from(*first_byte)?;
         match sig_type {
             SignatureType::Secp256k1 => Ok(Self::new_secp256k1(signature_data)),
             SignatureType::Bls => Ok(Self::new_bls(signature_data)),

src/wallet/subcommands/wallet_cmd.rs

@@ -413,10 +413,9 @@ impl WalletCommands {
                     .unwrap_or(42);
 
                 println!(
-                    "{:<width_addr$} {:<width_default$} {}",
+                    "{:<width_addr$} {:<width_default$} Balance",
                     "Address",
                     "Default",
-                    "Balance",
                     width_addr = max_addr_len,
                     width_default = 7,
                 );