style: fix lints

Author: Taowyoo

mbedtls/src/pkcs12/mod.rs

@@ -430,6 +430,7 @@ enum Pkcs12BagSet {
     EncryptedPkcs8(Vec<u8>),
     Pkcs8(Vec<u8>),
     Cert(CertBag),
+    #[allow(dead_code)]
     UnknownBlob(Vec<u8>),
     // XXX CRL and Secret bags not supported
     //Crl(CrlBag),

mbedtls/src/rng/ctr_drbg.rs

@@ -19,6 +19,7 @@ use crate::alloc_prelude::*;
 use crate::error::{IntoResult, Result};
 use crate::rng::{EntropyCallback, EntropyCallbackMut, RngCallback, RngCallbackMut};
 
+#[allow(dead_code)]
 enum EntropyHolder {
     Shared(Arc<dyn EntropyCallback + 'static>),
     Unique(Box<dyn EntropyCallbackMut + 'static>),