Fixes E_WARNING from foreach() because count() seem to return TRUE even when $r is no array ?!

Signed-off-by: Roland Haeder <roland@mxchange.org>

boot.php

@@ -1838,6 +1838,7 @@ function load_contact_links($uid) {
 	$r = q("SELECT `id`,`network`,`url`,`thumb`, `rel` FROM `contact` WHERE `uid` = %d AND `self` = 0 AND `blocked` = 0 AND `thumb` != ''",
 			intval($uid)
 	);
+
 	if(is_filled_array($r)) {
 		foreach($r as $rr){
 			$url = normalise_link($rr['url']);