Adding DeleteResult for servers.Delete
diff --git a/openstack/compute/v2/servers/requests_test.go b/openstack/compute/v2/servers/requests_test.go
index 23fe781..392e2d8 100644
--- a/openstack/compute/v2/servers/requests_test.go
+++ b/openstack/compute/v2/servers/requests_test.go
@@ -59,8 +59,8 @@
 	defer th.TeardownHTTP()
 	HandleServerDeletionSuccessfully(t)
 
-	err := Delete(client.ServiceClient(), "asdfasdfasdf")
-	th.AssertNoErr(t, err)
+	res := Delete(client.ServiceClient(), "asdfasdfasdf")
+	th.AssertNoErr(t, res.Err)
 }
 
 func TestGetServer(t *testing.T) {