link suggestions into the main code

include/socgraph.php

@@ -165,6 +165,9 @@ function common_friends($uid,$cid) {
 
 function suggestion_query($uid, $start = 0, $limit = 40) {
 
+	if(! $uid)
+		return array();
+
 	$r = q("SELECT count(glink.gcid) as `total`, gcontact.* from gcontact 
 		left join glink on glink.gcid = gcontact.id 
 		where uid = %d and not gcontact.nurl in ( select nurl from contact where uid = %d)