Missing initialization in simulator. Does if fix #937?

radio/src/simpgmspace.cpp

@@ -350,6 +350,8 @@ void StartMainThread(bool tests)
   pthread_mutex_init(&audioMutex, NULL);
 #endif
 
+  g_tmr10ms = 0;
+
   main_thread_running = (tests ? 1 : 2);
   pthread_create(&main_thread_pid, NULL, &main_thread, NULL);
 }