From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 20 May 2009 22:53:57 +0000 (-0700)
Subject: cache-tree.c::cache_tree_find(): simplify internal API
X-Git-Tag: v1.6.4-rc0~45^2~3
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=b87fc96476c4218de044cf77b4c6d10d49aee78a;p=git.git

cache-tree.c::cache_tree_find(): simplify internal API

Earlier cache_tree_find() needs to be called with a valid cache_tree,
but repeated look-up may find an invalid or missing cache_tree in between.
Help simplify the callers by returning NULL to mean "nothing appropriate
found" when the input is NULL.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---

diff --git a/cache-tree.c b/cache-tree.c
index 6dd841194..5481e4334 100644
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -514,6 +514,8 @@ struct cache_tree *cache_tree_read(const char *buffer, unsigned long size)
 
 static struct cache_tree *cache_tree_find(struct cache_tree *it, const char *path)
 {
+	if (!it)
+		return NULL;
 	while (*path) {
 		const char *slash;
 		struct cache_tree_sub *sub;