Update relation module

modules/relation/src/main/RelationApi.scala

@@ -47,12 +47,13 @@ final class RelationApi(
         readPreference = ReadPreference.secondaryPreferred
       ) { framework =>
         import framework._
-        Match(
-          $doc(
-            "$or" -> $arr($doc("u1" -> userId), $doc("u2" -> userId)),
-            "r"   -> Follow
-          )
-        ) -> List(
+        List(
+          Match(
+            $doc(
+              "$or" -> $arr($doc("u1" -> userId), $doc("u2" -> userId)),
+              "r"   -> Follow
+            )
+          ),
           Group(BSONNull)(
             "u1" -> AddFieldToSet("u1"),
             "u2" -> AddFieldToSet("u2")

modules/relation/src/main/RelationRepo.scala

@@ -117,7 +117,8 @@ final private class RelationRepo(coll: Coll, userRepo: lila.user.UserRepo)(impli
         $doc("u1" -> userId, "r" -> relation),
         $doc("_id" -> true).some
       )
-      .list[Bdoc](nb)
+      .cursor[Bdoc]()
+      .list(nb)
       .dmap {
         _.flatMap { _.string("_id") }
       } flatMap { ids =>