build fix for wxUSE_THREADS==0

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76309 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/unix/private/wakeuppipe.h

@@ -64,10 +64,10 @@ private:
 
 // This class can be used from multiple threads, i.e. its WakeUp() can be
 // called concurrently.
-#if wxUSE_THREADS
 
 class wxWakeUpPipeMT : public wxWakeUpPipe
 {
+#if wxUSE_THREADS
 public:
     wxWakeUpPipeMT() { }
 
@@ -90,12 +90,8 @@ public:
 private:
     // Protects access to m_pipeIsEmpty.
     wxCriticalSection m_pipeLock;
+
+#endif // wxUSE_THREADS
 };
 
-#else // !wxUSE_THREADS
-
-typedef wxWakeUpPipe wxWakeUpPipeMT;
-
-#endif // wxUSE_THREADS/!wxUSE_THREADS
-
 #endif // _WX_UNIX_PRIVATE_WAKEUPPIPE_H_