AtomicWaker: take and wake

Author: bugadani

embassy-sync/CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+- AtomicWaker now drops the Waker after waking it.
+
 ## 0.6.2 - 2025-01-15
 
 - Add dynamic dispatch variant of `Pipe`.

embassy-sync/src/waitqueue/atomic_waker.rs

@@ -33,9 +33,8 @@ impl<M: RawMutex> GenericAtomicWaker<M> {
     /// Wake the registered waker, if any.
     pub fn wake(&self) {
         self.waker.lock(|cell| {
-            if let Some(w) = cell.replace(None) {
-                w.wake_by_ref();
-                cell.set(Some(w));
+            if let Some(w) = cell.take() {
+                w.wake();
             }
         })
     }