rename_ref(): handle the case when the reflog of a ref does not exist

We tried to check if a reflog of a ref is a symlink without first
checking if it exists, which is a bug.

Signed-off-by: Miklos Vajna <vmiklos@frugalware.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/refs.c b/refs.c
index b929301752c3081c7d42cea8e0297e663fe500cb..b39e6f2c2d7023c45cdc21d4d72064352201fa4d 100644 (file)
--- a/refs.c
+++ b/refs.c
@@ -966,7 +966,7 @@ int rename_ref(const char *oldref, const char *newref, const char *logmsg)
        const char *symref = NULL;
        int is_symref = 0;
 
-       if (S_ISLNK(loginfo.st_mode))
+       if (log && S_ISLNK(loginfo.st_mode))
                return error("reflog for %s is a symlink", oldref);
 
        symref = resolve_ref(oldref, orig_sha1, 1, &flag);