list-objects: reduce one argument in mark_edges_uninteresting

mark_edges_uninteresting() is always called with this form

  mark_edges_uninteresting(revs->commits, revs, ...);

Remove the first argument and let mark_edges_uninteresting figure that
out by itself. It helps answer the question "are this commit list and
revs related in any way?" when looking at mark_edges_uninteresting
implementation.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/bisect.c b/bisect.c
index 71c1958..1e46a4f 100644
--- a/bisect.c
+++ b/bisect.c
@@ -624,7 +624,7 @@
 	if (prepare_revision_walk(revs))
 		die("revision walk setup failed");
 	if (revs->tree_objects)
-		mark_edges_uninteresting(revs->commits, revs, NULL);
+		mark_edges_uninteresting(revs, NULL);
 }
 
 static void exit_if_skipped_commits(struct commit_list *tried,