Adding DeleteResult for servers.Delete
diff --git a/openstack/compute/v2/servers/results.go b/openstack/compute/v2/servers/results.go
index 74a221f..f34d97f 100644
--- a/openstack/compute/v2/servers/results.go
+++ b/openstack/compute/v2/servers/results.go
@@ -39,6 +39,11 @@
 	serverResult
 }
 
+// DeleteResult temporarily contains the response from an Delete call.
+type DeleteResult struct {
+	serverResult
+}
+
 // RebuildResult temporarily contains the response from a Rebuild call.
 type RebuildResult struct {
 	serverResult