more error types; RequestOptsBuilder error fixes
diff --git a/openstack/orchestration/v1/stackevents/requests.go b/openstack/orchestration/v1/stackevents/requests.go
index bd1a24a..6112571 100644
--- a/openstack/orchestration/v1/stackevents/requests.go
+++ b/openstack/orchestration/v1/stackevents/requests.go
@@ -9,7 +9,7 @@
 func Find(c *gophercloud.ServiceClient, stackName string) FindResult {
 	var res FindResult
 
-	_, res.Err = c.Request("GET", findURL(c, stackName), gophercloud.RequestOpts{
+	_, res.Err = c.Request("GET", findURL(c, stackName), &gophercloud.RequestOpts{
 		JSONResponse: &res.Body,
 	})
 	return res