From b6c4a480b3161effaa3578df91d8cdc83044d7b6 Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Date: Sun, 7 May 2006 17:42:37 +0200
Subject: [PATCH] Fix crash when reading the empty tree

cvsimport needs to call git-read-tree without arguments to create an empty
tree.

Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <junkio@cox.net>
---
 read-tree.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/read-tree.c b/read-tree.c
index 067fb95e9d..49436bf96f 100644
--- a/read-tree.c
+++ b/read-tree.c
@@ -881,8 +881,8 @@ int main(int argc, char **argv)
 	 * valid cache-tree because the index must match exactly
 	 * what came from the tree.
 	 */
-	if (trees->item && (!merge || (stage == 2))) {
-		cache_tree_free(&active_cache_tree);		
+	if (trees && trees->item && (!merge || (stage == 2))) {
+		cache_tree_free(&active_cache_tree);
 		prime_cache_tree();
 	}