fix a -Wattributes

diff --git a/libs/ardour/ardour/mac_vst_plugin.h b/libs/ardour/ardour/mac_vst_plugin.h
index 4eb4e4130015f4896ae82d84c4b2fb8d591aec47..fa05dff80f8489adbebb11328334e14adb8959da 100644 (file)
--- a/libs/ardour/ardour/mac_vst_plugin.h
+++ b/libs/ardour/ardour/mac_vst_plugin.h
@@ -22,7 +22,7 @@
 
 #include "ardour/vst_plugin.h"
 
-struct LIBARDOUR_API _VSTHandle;
+struct _VSTHandle;
 typedef struct _VSTHandle VSTHandle;
 
 namespace ARDOUR {