Remove the Result typedef

Many of our functions do not return a Result<_, Error>, but for example
a Result<_, (Device, Error)>.  We only use the typedef in one function,
but it makes the other functions more complicated as we have to use
result::Result (if crate::Result is imported).  Therefore, this patch
removes the typedef.  Applications or libraries can still redefine it if
they want to.

3 files changed, 3 insertions, 7 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b9983ed..271230d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,7 @@ SPDX-License-Identifier: MIT
 - Introduce `DEFAULT_ADMIN_PIN` and `DEFAULT_USER_PIN` constants.
 - Refactor the error handling code:
   - Implement `std::error::Error` for `CommandError`.
-  - Add the `Error` enum and the `Result` typedef.
+  - Add the `Error` enum.
   - Add the `LibraryError` enum and move the library error variants from
     `CommandError` to `LibraryError`.
   - Add the `CommunicationError` enum and move the communication error variants
diff --git a/src/error.rs b/src/error.rs
index 1b36975..5c8c52e 100644
--- a/src/error.rs
+++ b/src/error.rs
@@ -4,7 +4,6 @@
 use std::error;
 use std::fmt;
 use std::os::raw;
-use std::result;
 use std::str;
 
 use crate::device;
@@ -100,9 +99,6 @@ impl fmt::Display for Error {
     }
 }
 
-/// A result returned by the nitrokey crate.
-pub type Result<T> = result::Result<T, Error>;
-
 /// An error reported by the Nitrokey device in the response packet.
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub enum CommandError {
diff --git a/src/lib.rs b/src/lib.rs
index 9d15d03..18c86e2 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -107,7 +107,7 @@ pub use crate::device::{
     connect, connect_model, Device, DeviceWrapper, Model, Pro, SdCardData, Storage,
     StorageProductionInfo, StorageStatus, VolumeMode, VolumeStatus,
 };
-pub use crate::error::{CommandError, CommunicationError, Error, LibraryError, Result};
+pub use crate::error::{CommandError, CommunicationError, Error, LibraryError};
 pub use crate::otp::{ConfigureOtp, GenerateOtp, OtpMode, OtpSlotData};
 pub use crate::pws::{GetPasswordSafe, PasswordSafe, SLOT_COUNT};
 pub use crate::util::LogLevel;
@@ -186,7 +186,7 @@ pub fn set_log_level(level: LogLevel) {
 /// ```
 ///
 /// [`Utf8Error`]: enum.Error.html#variant.Utf8Error
-pub fn get_library_version() -> Result<Version> {
+pub fn get_library_version() -> Result<Version, Error> {
     // NK_get_library_version returns a static string, so we don’t have to free the pointer.
     let git = unsafe { nitrokey_sys::NK_get_library_version() };
     let git = if git.is_null() {