discover_git_directory(): avoid setting invalid git_dir

diff --git a/rerere.c b/rerere.c
index 5d083ca572df0c8a2cb90c0b12c14e15b4134d48..3bd55caf3b0961888bcca06d3c54577cb25f5223 100644 (file)
--- a/rerere.c
+++ b/rerere.c
@@ -708,7 +708,7 @@ static void update_paths(struct string_list *update)
 {
        int i;
 
-       hold_locked_index(&index_lock, 1);
+       hold_locked_index(&index_lock, LOCK_DIE_ON_ERROR);
 
        for (i = 0; i < update->nr; i++) {
                struct string_list_item *item = &update->items[i];