Adding DeleteResult for v3.endpoints.Delete
diff --git a/openstack/identity/v3/endpoints/requests.go b/openstack/identity/v3/endpoints/requests.go
index 4bec427..66bdb0e 100644
--- a/openstack/identity/v3/endpoints/requests.go
+++ b/openstack/identity/v3/endpoints/requests.go
@@ -134,10 +134,11 @@
 }
 
 // Delete removes an endpoint from the service catalog.
-func Delete(client *gophercloud.ServiceClient, endpointID string) error {
-	_, err := perigee.Request("DELETE", endpointURL(client, endpointID), perigee.Options{
+func Delete(client *gophercloud.ServiceClient, endpointID string) DeleteResult {
+	var res DeleteResult
+	_, res.Err = perigee.Request("DELETE", endpointURL(client, endpointID), perigee.Options{
 		MoreHeaders: client.AuthenticatedHeaders(),
 		OkCodes:     []int{204},
 	})
-	return err
+	return res
 }