set_git_dir: die when setenv() fails

diff --git a/builtin/describe.c b/builtin/describe.c
index c4289847063ac02ed061f890ffd71cd329d67109..e4869df7b434845544dfcc0c37cae6a77cd42dad 100644 (file)
--- a/builtin/describe.c
+++ b/builtin/describe.c
@@ -502,7 +502,7 @@ static void describe(const char *arg, int last_one)
 
        if (cmit)
                describe_commit(&oid, &sb);
-       else if (lookup_blob(&oid))
+       else if (sha1_object_info(oid.hash, NULL) == OBJ_BLOB)
                describe_blob(oid, &sb);
        else
                die(_("%s is neither a commit nor blob"), arg);