luci-base: handle default protocol for UCI interfaces

The protocol defaults to 'none' in netifd if unspecified.

Signed-off-by: Erik Karlsson <[email protected]>

modules/luci-base/htdocs/luci-static/resources/network.js

@@ -1655,7 +1655,7 @@ Network = baseclass.extend(/** @lends LuCI.network.prototype */ {
 		if (name == null)
 			return null;
 
-		proto = (proto == null ? uci.get('network', name, 'proto') : proto);
+		proto = (proto == null ? (uci.get('network', name, 'proto') || 'none') : proto);
 
 		var protoClass = _protocols[proto] || Protocol;
 		return new protoClass(name);