Correct a symbol typo

public/tier0/logging.h

@@ -85,7 +85,7 @@
 //////////////////////////////////////////////////////////////////////////
 
 class CLoggingSystem;
-class СAtomicMutex;
+class CAtomicMutex;
 
 //-----------------------------------------------------------------------------
 // Maximum length of a sprintf'ed logging message.
@@ -720,7 +720,7 @@ private:
 	// Protects all data in this class except the registered channels 
 	// (which are supposed to be registered using the macros at static/global init time).
 	// It is assumed that this mutex is reentrant safe on all platforms.
-	СAtomicMutex *m_pStateMutex;
+	CAtomicMutex *m_pStateMutex;
 	
 	// The index of the current "global" state of the logging system.  By default, all threads use this state
 	// for logging unless a given thread has pushed the logging state with bThreadLocal == true.