Adding DeleteResult for rackspace.blockstorage.v1.snapshots.Delete
diff --git a/rackspace/blockstorage/v1/snapshots/delegate_test.go b/rackspace/blockstorage/v1/snapshots/delegate_test.go
index fad7636..1a02b46 100644
--- a/rackspace/blockstorage/v1/snapshots/delegate_test.go
+++ b/rackspace/blockstorage/v1/snapshots/delegate_test.go
@@ -92,6 +92,6 @@
 
 	os.MockDeleteResponse(t)
 
-	err := Delete(fake.ServiceClient(), "d32019d3-bc6e-4319-9c1d-6722fc136a22")
-	th.AssertNoErr(t, err)
+	res := Delete(fake.ServiceClient(), "d32019d3-bc6e-4319-9c1d-6722fc136a22")
+	th.AssertNoErr(t, res.Err)
 }