Fix Windows build: declare static class-keys (amend 201fd5574)

diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index 4dbcaeb36050800192b54dff0568ace2b77f4a4e..6d29e1932a1f9df206454dc0af97634e7d115b23 100644 (file)
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -168,6 +168,7 @@ CLASSKEYS(std::list<Selectable*>);
 
 CLASSKEYS(ARDOUR::AudioEngine);
 CLASSKEYS(ARDOUR::BeatsFramesConverter);
+CLASSKEYS(ARDOUR::DoubleBeatsFramesConverter);
 CLASSKEYS(ARDOUR::BufferSet);
 CLASSKEYS(ARDOUR::ChanCount);
 CLASSKEYS(ARDOUR::ChanMapping);