Fix undefined variable usage after 2703efedef

app/streaming/video/ffmpeg-renderers/pacer/nullthreadedvsyncsource.cpp

@@ -37,7 +37,7 @@ int NullThreadedVsyncSource::vsyncThread(void* context)
     SDL_SetThreadPriority(SDL_THREAD_PRIORITY_TIME_CRITICAL);
 #else
     SDL_SetThreadPriority(SDL_THREAD_PRIORITY_HIGH);
-#endif;
+#endif
 
     while (SDL_AtomicGet(&me->m_Stopping) == 0) {
         me->m_Pacer->vsyncCallback(1000 / me->m_DisplayFps);