no naked returns in go; fix auth v3 unit tests
diff --git a/openstack/cdn/v1/base/requests.go b/openstack/cdn/v1/base/requests.go
index 99e7309..34d3b72 100644
--- a/openstack/cdn/v1/base/requests.go
+++ b/openstack/cdn/v1/base/requests.go
@@ -6,6 +6,7 @@
 // entire API.
 func Get(c *gophercloud.ServiceClient) (r GetResult) {
 	_, r.Err = c.Get(getURL(c), &r.Body, nil)
+	return
 }
 
 // Ping retrieves a ping to the server.
@@ -14,4 +15,5 @@
 		OkCodes:     []int{204},
 		MoreHeaders: map[string]string{"Accept": ""},
 	})
+	return
 }