database: Add missing virtual destructors for some classes

database/sqlitedao.h

@@ -37,6 +37,8 @@ class SqliteDao
 
 	bool execBool(sqlite::database_binder &binder) const;
 	int execInt(sqlite::database_binder &binder) const;
+
+	virtual ~SqliteDao() = default;
 };
 
 #endif // SQLITEDAO_H