Do not write out new index if nothing has changed.

diff --git a/commit.c b/commit.c
index 3956c7ba961781f72b39c42368df1e76b2d035dd..b45118a544276797f6bc9c0f482c187647f0e88d 100644 (file)
--- a/commit.c
+++ b/commit.c
@@ -54,9 +54,11 @@ int parse_commit(struct commit *item)
        if (!buffer)
                return error("Could not read %s",
                             sha1_to_hex(item->object.sha1));
-       if (strcmp(type, commit_type))
+       if (strcmp(type, commit_type)) {
+               free(buffer);
                return error("Object %s not a commit",
                             sha1_to_hex(item->object.sha1));
+       }
        get_sha1_hex(bufptr + 5, parent);
        item->tree = lookup_tree(parent);
        if (item->tree)