Change conditional for VS

Signed-off-by: Darby Johnston <[email protected]>

Author: darbyjohnston

examples/flatten_video_tracks.cpp

@@ -38,7 +38,7 @@ int main(int argc, char** argv)
     // into a single track.
     std::cout << "Flattening " << video_tracks.size() << " video tracks into one..." << std::endl;
     auto onetrack = otio::flatten_stack(video_tracks, &error_status);
-    if (!onetrack or is_error(error_status))
+    if (!onetrack || is_error(error_status))
     {
         examples::print_error(error_status);
         return 1;