fix potential index out of range while meets corrupted keyspace prefix

Signed-off-by: iosmanthus <[email protected]>

Author: iosmanthus

src/request/codec.rs

@@ -302,7 +302,6 @@ impl<M: Mode> RequestCodec for ApiV2<M> {
         if !key.starts_with(&prefix) {
             return Err(Error::CorruptedKeyspace {
                 expected: prefix.to_vec(),
-                actual: key[..KEYSPACE_PREFIX_LEN].to_vec(),
                 key: key.to_vec(),
             });
         }

tikv-client-common/src/errors.rs

@@ -93,17 +93,8 @@ pub enum Error {
         inner: Box<Error>,
         success_keys: Vec<Vec<u8>>,
     },
-    #[error(
-        "Corrupted keyspace: expected: {:?}, actual: {:?}, key: {:?}",
-        expected,
-        actual,
-        key
-    )]
-    CorruptedKeyspace {
-        expected: Vec<u8>,
-        actual: Vec<u8>,
-        key: Vec<u8>,
-    },
+    #[error("Corrupted keyspace: expected: {:?}, key: {:?}", expected, key)]
+    CorruptedKeyspace { expected: Vec<u8>, key: Vec<u8> },
 }
 
 impl From<tikv_client_proto::errorpb::Error> for Error {