C++11 cleanup.

diff --git a/src/lib/video_content.cc b/src/lib/video_content.cc
index 658f98cdd4c2535fa4b5f0ee8965514165bc4bc4..10a611691adc8106bc74f47151164bf07d6a8282 100644 (file)
--- a/src/lib/video_content.cc
+++ b/src/lib/video_content.cc
@@ -435,7 +435,7 @@ VideoContent::fade (shared_ptr<const Film> film, Frame f) const
                return 1 - double (f - fade_out_start) / fade_out();
        }
 
-       return optional<double> ();
+       return {};
 }