Merge #13125: scheduler: Add Clang thread safety annotations for variables guarded by m_cs_callbacks_pending

244f4ba scheduler: Add Clang thread safety annotations for variables guarded by m_cs_callbacks_pending (practicalswift)

Pull request description:

  Add Clang thread safety annotations for variables guarded by `m_cs_callbacks_pending`.

Tree-SHA512: 5c4aa14d1918ff119f945084820f7c1c5618e2a38d8bea8ebbfa6acddbccdacfea81fa61f1f796f8b1fcf57f5e3112da63b9bd0fa97fc9a9ef427fc361945e02

Author: MarcoFalke

src/scheduler.h

@@ -95,8 +95,8 @@ class SingleThreadedSchedulerClient {
     CScheduler *m_pscheduler;
 
     CCriticalSection m_cs_callbacks_pending;
-    std::list<std::function<void (void)>> m_callbacks_pending;
-    bool m_are_callbacks_running = false;
+    std::list<std::function<void (void)>> m_callbacks_pending GUARDED_BY(m_cs_callbacks_pending);
+    bool m_are_callbacks_running GUARDED_BY(m_cs_callbacks_pending) = false;
 
     void MaybeScheduleProcessQueue();
     void ProcessQueue();