no naked returns in go; fix auth v3 unit tests
diff --git a/openstack/compute/v2/extensions/tenantnetworks/requests.go b/openstack/compute/v2/extensions/tenantnetworks/requests.go
index 2df856f..82836d4 100644
--- a/openstack/compute/v2/extensions/tenantnetworks/requests.go
+++ b/openstack/compute/v2/extensions/tenantnetworks/requests.go
@@ -15,4 +15,5 @@
 // Get returns data about a previously created Network.
 func Get(client *gophercloud.ServiceClient, id string) (r GetResult) {
 	_, r.Err = client.Get(getURL(client, id), &r.Body, nil)
+	return
 }