Add a virtual destructor to CollectionSource

diff --git a/source/collectionsource.h b/source/collectionsource.h
index 398f7942c85c6260d514796beac77146b5cc7d32..90c36f2fce009768874c42b56c21fbf29d11457d 100644 (file)
--- a/source/collectionsource.h
+++ b/source/collectionsource.h
@@ -22,8 +22,9 @@ public:
 
 protected:
        CollectionSource() { }
-
 public:
+       virtual ~CollectionSource() { }
+
        /** Determines */
        virtual bool is_loadable(const CollectionItemTypeBase &type, const std::string &name) const = 0;