From 7fd12bfbef015bb63f2376f678d71bca54bbc64d Mon Sep 17 00:00:00 2001
From: Michael Haggerty <mhagger@alum.mit.edu>
Date: Thu, 7 Apr 2016 15:03:09 -0400
Subject: [PATCH] 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>
---
 http-backend.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/http-backend.c b/http-backend.c
index 8870a2681eb375..214881459d8281 100644
--- 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));
 	}