more error types; RequestOptsBuilder error fixes
diff --git a/openstack/orchestration/v1/stackresources/requests.go b/openstack/orchestration/v1/stackresources/requests.go
index e8debdd..3ce40eb 100644
--- a/openstack/orchestration/v1/stackresources/requests.go
+++ b/openstack/orchestration/v1/stackresources/requests.go
@@ -10,7 +10,7 @@
 	var res FindResult
 
 	// Send request to API
-	_, 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