Remove direct libc dependency

Author: madsmtm

Cargo.toml

@@ -59,7 +59,6 @@ objc2-foundation = { version = "0.2.0", features = [
     "NSUUID",
     "NSValue",
 ] }
-libc = "0.2.151"
 
 [target.'cfg(target_os = "windows")'.dependencies]
 windows = { version = "0.52.0", features = ["Devices_Bluetooth", "Devices_Bluetooth_GenericAttributeProfile", "Devices_Bluetooth_Advertisement", "Devices_Radios", "Foundation_Collections", "Foundation", "Storage_Streams"] }

src/corebluetooth/central_delegate.rs

@@ -25,7 +25,6 @@ use super::{
 };
 use futures::channel::mpsc::{self, Receiver, Sender};
 use futures::sink::SinkExt;
-use libc::c_void;
 use log::{error, trace};
 use objc2::runtime::{
     AnyClass as Class, AnyObject as Object, AnyProtocol as Protocol, ClassBuilder, Sel,
@@ -36,6 +35,7 @@ use std::{
     collections::HashMap,
     fmt::{self, Debug, Formatter},
     ops::Deref,
+    os::raw::c_void,
     sync::Once,
 };
 use uuid::Uuid;