Adding DeleteResult for servers.Delete
diff --git a/openstack/compute/v2/servers/requests.go b/openstack/compute/v2/servers/requests.go
index 544f816..b0d1e6a 100644
--- a/openstack/compute/v2/servers/requests.go
+++ b/openstack/compute/v2/servers/requests.go
@@ -206,12 +206,13 @@
 }
 
 // Delete requests that a server previously provisioned be removed from your account.
-func Delete(client *gophercloud.ServiceClient, id string) error {
-	_, err := perigee.Request("DELETE", deleteURL(client, id), perigee.Options{
+func Delete(client *gophercloud.ServiceClient, id string) DeleteResult {
+	var res DeleteResult
+	_, res.Err = perigee.Request("DELETE", deleteURL(client, id), perigee.Options{
 		MoreHeaders: client.AuthenticatedHeaders(),
 		OkCodes:     []int{204},
 	})
-	return err
+	return res
 }
 
 // Get requests details on a single server, by ID.