git-commit: don't add multiple Signed-off-by: from the same identity

diff --git a/cache-tree.c b/cache-tree.c
index 9b73c8669a0946c3bcbf1de777e9acd4cd34bcae..077f03436941e9c0bf31d3bb2002c1e36b8817b9 100644 (file)
--- a/cache-tree.c
+++ b/cache-tree.c
@@ -326,7 +326,7 @@ static int update_one(struct cache_tree *it,
                        mode = ntohl(ce->ce_mode);
                        entlen = pathlen - baselen;
                }
-               if (!missing_ok && !has_sha1_file(sha1))
+               if (mode != S_IFGITLINK && !missing_ok && !has_sha1_file(sha1))
                        return error("invalid object %s", sha1_to_hex(sha1));
 
                if (!ce->ce_mode)
@@ -478,7 +478,7 @@ static struct cache_tree *read_one(const char **buffer, unsigned long *size_p)
        if (0 <= it->entry_count) {
                if (size < 20)
                        goto free_return;
-               hashcpy(it->sha1, (unsigned char*)buf);
+               hashcpy(it->sha1, (const unsigned char*)buf);
                buf += 20;
                size -= 20;
        }