links: Don't close loopback link

knet_link_clear_config would incorrectly clear the local
loopback link if the last 'real' link to an external node
was closed. We didn't check the nodeid in the code, just
the link number when clearing the loopback flag.

Signed-off-by: Christine Caulfield <ccaulfie@redhat.com>

libknet/links.c

@@ -401,7 +401,7 @@ int knet_link_clear_config(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t
 	memset(link, 0, sizeof(struct knet_link));
 	link->link_id = link_id;
 
-	if (knet_h->has_loop_link && link_id == knet_h->loop_link) {
+	if (knet_h->has_loop_link && host_id == knet_h->host_id && link_id == knet_h->loop_link) {
 		knet_h->has_loop_link = 0;
 		if (host->active_link_entries == 0) {
 			host->status.reachable = 0;