bgpd: cleanup macip_path_list for remote macip

ASAN reported the following memleak:
```
Direct leak of 40 byte(s) in 1 object(s) allocated from:
    #0 0x4d4342 in calloc (/usr/lib/frr/bgpd+0x4d4342)
    FRRouting#1 0xbc3d68 in qcalloc /home/sharpd/frr8/lib/memory.c:116:27
    FRRouting#2 0xb869f7 in list_new /home/sharpd/frr8/lib/linklist.c:64:9
    FRRouting#3 0x5a38bc in bgp_evpn_remote_ip_hash_alloc /home/sharpd/frr8/bgpd/bgp_evpn.c:6789:24
    FRRouting#4 0xb358d3 in hash_get /home/sharpd/frr8/lib/hash.c:162:13
    FRRouting#5 0x593d39 in bgp_evpn_remote_ip_hash_add /home/sharpd/frr8/bgpd/bgp_evpn.c:6881:7
    FRRouting#6 0x59dbbd in install_evpn_route_entry_in_vni_common /home/sharpd/frr8/bgpd/bgp_evpn.c:3049:2
    FRRouting#7 0x59cfe0 in install_evpn_route_entry_in_vni_ip /home/sharpd/frr8/bgpd/bgp_evpn.c:3126:8
    FRRouting#8 0x59c6f0 in install_evpn_route_entry /home/sharpd/frr8/bgpd/bgp_evpn.c:3318:8
    FRRouting#9 0x59bb52 in install_uninstall_route_in_vnis /home/sharpd/frr8/bgpd/bgp_evpn.c:3888:10
    FRRouting#10 0x59b6d2 in bgp_evpn_install_uninstall_table /home/sharpd/frr8/bgpd/bgp_evpn.c:4019:5
    FRRouting#11 0x578857 in install_uninstall_evpn_route /home/sharpd/frr8/bgpd/bgp_evpn.c:4051:9
    FRRouting#12 0x58ada6 in bgp_evpn_import_route /home/sharpd/frr8/bgpd/bgp_evpn.c:6049:9
    FRRouting#13 0x713794 in bgp_update /home/sharpd/frr8/bgpd/bgp_route.c:4842:3
    FRRouting#14 0x583fa0 in process_type2_route /home/sharpd/frr8/bgpd/bgp_evpn.c:4518:9
    FRRouting#15 0x5824ba in bgp_nlri_parse_evpn /home/sharpd/frr8/bgpd/bgp_evpn.c:5732:8
    FRRouting#16 0x6ae6a2 in bgp_nlri_parse /home/sharpd/frr8/bgpd/bgp_packet.c:363:10
    FRRouting#17 0x6be6fa in bgp_update_receive /home/sharpd/frr8/bgpd/bgp_packet.c:2020:15
    FRRouting#18 0x6b7433 in bgp_process_packet /home/sharpd/frr8/bgpd/bgp_packet.c:2929:11
    FRRouting#19 0xd00146 in thread_call /home/sharpd/frr8/lib/thread.c:2006:2
```

The list itself was not being cleaned up when the final list entry was
removed, so make sure we do that instead of leaking memory.

Signed-off-by: Trey Aspelund <taspelund@nvidia.com>

bgpd/bgp_evpn.c

@@ -6912,6 +6912,7 @@ static void bgp_evpn_remote_ip_hash_del(struct bgpevpn *vpn,
 	if (ip->macip_path_list->count == 0) {
 		bgp_evpn_remote_ip_process_nexthops(vpn, &ip->addr, false);
 		hash_release(vpn->remote_ip_hash, ip);
+		list_delete(&ip->macip_path_list);
 		XFREE(MTYPE_EVPN_REMOTE_IP, ip);
 	}
 }