Fix ostatus bug related to only_full_group_by

https://github.com/friendica/friendica/issues/3322

include/ostatus.php

@@ -720,7 +720,7 @@ class ostatus {
 			$conversations = q("SELECT `term`.`oid`, `term`.`url`, `term`.`uid` FROM `term`
 						STRAIGHT_JOIN `thread` ON `thread`.`iid` = `term`.`oid` AND `thread`.`uid` = `term`.`uid`
 						WHERE `term`.`type` = 7 AND `term`.`term` > '%s' AND `thread`.`mention`
-						GROUP BY `term`.`url`, `term`.`uid` ORDER BY `term`.`term` DESC", dbesc($start));
+						GROUP BY `term`.`url`, `term`.`uid`, `term`.`oid`, `term`.`term` ORDER BY `term`.`term` DESC", dbesc($start));
 		} else {
 			$conversations = q("SELECT `oid`, `url`, `uid` FROM `term`
 						WHERE `type` = 7 AND `term` > '%s'