[TIPC]: Can now list multicast link on an isolated network node

This patch fixes a minor bug that prevents "tipc-config -l" from
displaying the multicast link if a TIPC node has never successfully
established at least one unicast link.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/tipc/node.c b/net/tipc/node.c
index fc6d096..886bda5 100644
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -648,7 +648,7 @@
 		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
 						   " (network address)");
 
-        if (!tipc_nodes)
+        if (tipc_mode != TIPC_NET_MODE)
                 return tipc_cfg_reply_none();
 	
 	/* Get space for all unicast links + multicast link */