add missing virtual desctructor

lonvia · lonvia · commit 4ca8e1598021 · 2019-02-22T19:44:05.000+01:00
diff --git a/db-copy.hpp b/db-copy.hpp
@@ -54,6 +54,8 @@ class db_cmd_t
         Cmd_finish
     };
 
+    virtual ~db_cmd_t() = default;
+
     cmd_t type;
 
 protected:
