show_head_ref(): check the result of resolve_ref_namespace()

Only use the result of resolve_ref_namespace() if it is non-NULL.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: David Turner <dturner@twopensource.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/http-backend.c b/http-backend.c
index 8870a2681eb375505e4273b03a0d3e034e59a48e..214881459d828101fa0927321c5a8facb3a540f0 100644 (file)
--- a/http-backend.c
+++ b/http-backend.c
@@ -484,9 +484,9 @@ static int show_head_ref(const char *refname, const struct object_id *oid,
                const char *target = resolve_ref_unsafe(refname,
                                                        RESOLVE_REF_READING,
                                                        unused.hash, NULL);
-               const char *target_nons = strip_namespace(target);
 
-               strbuf_addf(buf, "ref: %s\n", target_nons);
+               if (target)
+                       strbuf_addf(buf, "ref: %s\n", strip_namespace(target));
        } else {
                strbuf_addf(buf, "%s\n", oid_to_hex(oid));
        }