git-commit: document --amend

diff --git a/diff-tree.c b/diff-tree.c
index f55a35a9d5f9ae4e3f7d3fd778a953cc9cc533ad..d1265d796388dd1c1a56c00f793893ee9dc6ed10 100644 (file)
--- a/diff-tree.c
+++ b/diff-tree.c
@@ -52,7 +52,7 @@ static int diff_root_tree(const unsigned char *new, const char *base)
        void *tree;
        struct tree_desc empty, real;
 
-       tree = read_object_with_reference(new, "tree", &real.size, NULL);
+       tree = read_object_with_reference(new, tree_type, &real.size, NULL);
        if (!tree)
                die("unable to read root tree (%s)", sha1_to_hex(new));
        real.buf = tree;