radix: radix_elem needs a virtual dtor since it's meant to be subclassed

8d5d5226 · Austin Clements · 8f7559a5 · 8d5d5226
--- a/include/radix.hh
+++ b/include/radix.hh
@@ -152,6 +152,7 @@ class radix_elem : public rcu_freed {
 public:
  radix_elem() : rcu_freed("radix_elem"), ref_(0) {}
+  virtual ~radix_elem() {}
  void decref(u64 delta = 1) {
    if ((ref_ -= delta) == 0) {
      gc_delayed(this);