Implement bytemuck::NoUninit for StdThreadId

Author: Techcable

src/std.rs

@@ -55,6 +55,14 @@ unsafe impl crate::IThreadId for StdThreadId {
 #[cfg_attr(feature = "nightly-docs", doc(cfg(feature = "bytemuck")))]
 // SAFETY: We are #[repr(transparent)]
 unsafe impl bytemuck::TransparentWrapper<ThreadId> for StdThreadId {}
+
+#[cfg(feature = "bytemuck")]
+#[cfg_attr(feature = "nightly-docs", doc(cfg(feature = "bytemuck")))]
+// SAFETY: We trust that std::thread::ThreadId just wraps an integer
+// Technically this isn't guaranteed by the API,
+// but there is no other reasonable implementation.
+unsafe impl bytemuck::NoUninit for StdThreadId {}
+
 // SAFETY: stdlib guarantees that threadid is unique
 unsafe impl crate::IThreadId for ThreadId {
     #[inline]