fix(udp): feature flag tracing in windows.rs

8712910 made `tracing` optional and added optional `log`, but forgot to update
`quinn-udp/src/windows.rs`. This commit fixes the oversight and bumps the
`quinn-udp` version to `v0.5.4`.

quinn-udp/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "quinn-udp"
-version = "0.5.3"
+version = "0.5.4"
 edition = "2021"
 rust-version = "1.66"
 license = "MIT OR Apache-2.0"

quinn-udp/src/windows.rs

@@ -9,7 +9,11 @@ use std::{
 };
 
 use libc::{c_int, c_uint};
+#[cfg(all(feature = "direct-log", not(feature = "tracing")))]
+use log::{debug, error};
 use once_cell::sync::Lazy;
+#[cfg(feature = "tracing")]
+use tracing::{debug, error};
 use windows_sys::Win32::Networking::WinSock;
 
 use crate::{
@@ -60,7 +64,8 @@ impl UdpSocketState {
 
  // We don't support old versions of Windows that do not enable access to `WSARecvMsg()`
  if WSARECVMSG_PTR.is_none() {
- tracing::error!("network stack does not support WSARecvMsg function");
+ #[cfg(any(feature = "tracing", feature = "direct-log"))]
+ error!("network stack does not support WSARecvMsg function");
 
  return Err(io::Error::from(io::ErrorKind::Unsupported));
  }
@@ -387,7 +392,8 @@ const OPTION_ON: u32 = 1;
 static WSARECVMSG_PTR: Lazy<WinSock::LPFN_WSARECVMSG> = Lazy::new(|| {
  let s = unsafe { WinSock::socket(WinSock::AF_INET as _, WinSock::SOCK_DGRAM as _, 0) };
  if s == WinSock::INVALID_SOCKET {
- tracing::debug!(
+ #[cfg(any(feature = "tracing", feature = "direct-log"))]
+ debug!(
  "ignoring WSARecvMsg function pointer due to socket creation error: {}",
  io::Error::last_os_error()
  );
@@ -416,12 +422,14 @@ static WSARECVMSG_PTR: Lazy<WinSock::LPFN_WSARECVMSG> = Lazy::new(|| {
  };
 
  if rc == -1 {
- tracing::debug!(
+ #[cfg(any(feature = "tracing", feature = "direct-log"))]
+ debug!(
  "ignoring WSARecvMsg function pointer due to ioctl error: {}",
  io::Error::last_os_error()
  );
  } else if len as usize != mem::size_of::<WinSock::LPFN_WSARECVMSG>() {
- tracing::debug!("ignoring WSARecvMsg function pointer due to pointer size mismatch");
+ #[cfg(any(feature = "tracing", feature = "direct-log"))]
+ debug!("ignoring WSARecvMsg function pointer due to pointer size mismatch");
  wsa_recvmsg_ptr = None;
  }