OSX crash-on-exit fix

src/CubicSDR.cpp

@@ -74,10 +74,6 @@ int CubicSDR::OnExit() {
 
     demodMgr.terminateAll();
 
-#ifdef __APPLE__
-    AudioThread::deviceCleanup();
-#endif
-
     delete threadCmdQueueSDR;
 
     delete iqVisualQueue;
@@ -86,6 +82,11 @@ int CubicSDR::OnExit() {
 
     delete m_glContext;
 
+
+#ifdef __APPLE__
+    AudioThread::deviceCleanup();
+#endif
+
     return wxApp::OnExit();
 }