config: only read .git/config from configured repos

diff --git a/refs/files-backend.c b/refs/files-backend.c
index ec237efec35d812b8b5be8fb0f6a2988343cde1a..ea78ce9d90f0bb02fcd471c1c113e22053a3ba94 100644 (file)
--- a/refs/files-backend.c
+++ b/refs/files-backend.c
@@ -2898,7 +2898,6 @@ int set_worktree_head_symref(const char *gitdir, const char *target)
 {
        static struct lock_file head_lock;
        struct ref_lock *lock;
-       struct strbuf err = STRBUF_INIT;
        struct strbuf head_path = STRBUF_INIT;
        const char *head_rel;
        int ret;
@@ -2906,6 +2905,8 @@ int set_worktree_head_symref(const char *gitdir, const char *target)
        strbuf_addf(&head_path, "%s/HEAD", absolute_path(gitdir));
        if (hold_lock_file_for_update(&head_lock, head_path.buf,
                                      LOCK_NO_DEREF) < 0) {
+               struct strbuf err = STRBUF_INIT;
+               unable_to_lock_message(head_path.buf, errno, &err);
                error("%s", err.buf);
                strbuf_release(&err);
                strbuf_release(&head_path);