[PATCH v2 2/8] checkout: no need to call check_linked_checkouts if head_ref is NULL

[Nguyễn Thái Ngọc Duy]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclo...@gmail.com>
---
 builtin/checkout.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/builtin/checkout.c b/builtin/checkout.c
index c83f476..6ac89eb 100644
--- a/builtin/checkout.c
+++ b/builtin/checkout.c
@@ -1202,7 +1202,8 @@ static int parse_branchname_arg(int argc, const char 
**argv,
                unsigned char sha1[20];
                int flag;
                char *head_ref = resolve_refdup("HEAD", sha1, 0, &flag);
-               if (!(flag & REF_ISSYMREF) || strcmp(head_ref, new->path))
+               if (head_ref &&
+                   (!(flag & REF_ISSYMREF) || strcmp(head_ref, new->path)))
                        check_linked_checkouts(new);
                free(head_ref);
        }
-- 
2.1.0.rc0.78.gc0d8480

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