Missing virtual destructor.

diff --git a/src/lib/filter_graph.h b/src/lib/filter_graph.h
index 2138943e42b6e3e6ef11ba4967f0c85f0755d618..ee378af4cddaf4b1ae7608644d53d7be7f270903 100644 (file)
--- a/src/lib/filter_graph.h
+++ b/src/lib/filter_graph.h
@@ -33,6 +33,7 @@ class FFmpegDecoder;
 class FilterGraph
 {
 public:
+       virtual ~FilterGraph () {}
        virtual bool can_process (libdcp::Size, AVPixelFormat) const = 0;
        virtual std::list<boost::shared_ptr<Image> > process (AVFrame *) = 0;
 };