network/manager: hash_ops related cleanups (#37121)

diff --cc src/network/networkd-link.c
Simple merge

diff --cc src/network/networkd-network.c
index 2a5f9eb900ee55f59eaf0fbdfec6f9914f3b5572,9994eeb76975c05ac0b6c119c5b47f0628619ef0..03e91dccd480407ab37fcf7e55721934bc2fb8aa
--- 1/src/network/networkd-network.c
--- 2/src/network/networkd-network.c
+++ b/src/network/networkd-network.c
@@@ -820,10 -829,10 +824,10 @@@ static Network *network_free(Network *n
          netdev_unref(network->bridge);
          netdev_unref(network->bond);
          netdev_unref(network->vrf);
-         hashmap_free_with_destructor(network->stacked_netdevs, netdev_unref);
+         hashmap_free(network->stacked_netdevs);
  
          /* static configs */
 -        set_free_free(network->ipv6_proxy_ndp_addresses);
 +        set_free(network->ipv6_proxy_ndp_addresses);
          ordered_hashmap_free(network->addresses_by_section);
          hashmap_free(network->routes_by_section);
          ordered_hashmap_free(network->nexthops_by_section);