tipc: Optimize tipc_node_has_active_links()

Eliminate unnecessary checking for null node pointer and redundant
check of second active link array entry.

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/tipc/node.c

@@ -237,8 +237,7 @@ void tipc_node_link_down(struct tipc_node *n_ptr, struct link *l_ptr)
 
 int tipc_node_has_active_links(struct tipc_node *n_ptr)
 {
-	return (n_ptr &&
-		((n_ptr->active_links[0]) || (n_ptr->active_links[1])));
+	return n_ptr->active_links[0] != NULL;
 }
 
 int tipc_node_has_redundant_links(struct tipc_node *n_ptr)