Add missing virtual destructor.

diff --git a/src/asset.h b/src/asset.h
index 492f16be822e0a9f7125d7368dd8f31ad401ae67..cc6fbcb7c374f7ec06ed98afd004fc2b3e875d1b 100644 (file)
--- a/src/asset.h
+++ b/src/asset.h
@@ -49,6 +49,8 @@ public:
         */
        Asset (std::string directory, std::string file_name = "");
 
+       virtual ~Asset() {}
+
        /** Write details of the asset to a CPL stream.
         *  @param s Stream.
         */