From c34066358a604e3ccb6afcf5679fa8a84be79936 Mon Sep 17 00:00:00 2001
From: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Date: Mon, 18 Feb 2008 21:47:55 +0100
Subject: [PATCH] reachable.c::add_one_tree: handle NULL from lookup_tree

Signed-off-by: Martin Koegler <mkoegler@auto.tuwien.ac.at>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 reachable.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/reachable.c b/reachable.c
index 6383401e2..ddf39e556 100644
--- a/reachable.c
+++ b/reachable.c
@@ -150,7 +150,8 @@ static int add_one_reflog(const char *path, const unsigned char *sha1, int flag,
 static void add_one_tree(const unsigned char *sha1, struct rev_info *revs)
 {
 	struct tree *tree = lookup_tree(sha1);
-	add_pending_object(revs, &tree->object, "");
+	if (tree)
+		add_pending_object(revs, &tree->object, "");
 }
 
 static void add_cache_tree(struct cache_tree *it, struct rev_info *revs)