prepare for Comanchification of mod_photos

include/Contact.php

@@ -77,6 +77,19 @@ function vcard_from_xchan($xchan, $observer = null, $mode = '') {
 
 	$a = get_app();
 
+	if(! $xchan) {
+		if($a->profile['channel_hash'])
+			$r = q("select * from xchan where xchan_hash = '%s' limit 1",
+				dbesc($a->profile['channel_hash'])
+			);
+			if($r)
+				$xchan = $r[0];
+	}
+
+	if(! $xchan)
+		return;
+
+// FIXME - show connect button to observer if appropriate
 	$connect = false;
 	if(local_user()) {
 		$r = q("select * from abook where abook_xchan = '%s' and abook_channel = %d limit 1",