getLabelCounters: properly check for user_entry uid (closes #671)

include/functions.php

@@ -1469,7 +1469,8 @@
 		$result = db_query($link, "SELECT id,caption,COUNT(unread) AS unread
 			FROM ttrss_labels2 LEFT JOIN ttrss_user_labels2 ON
 				(ttrss_labels2.id = label_id)
-					LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true)
+				LEFT JOIN ttrss_user_entries ON (ref_id = article_id AND unread = true
+					AND ttrss_user_entries.owner_uid = $owner_uid)
 				WHERE ttrss_labels2.owner_uid = $owner_uid GROUP BY ttrss_labels2.id,
 					ttrss_labels2.caption");