fix issue with proto methods being wiped off objects when cloning

lib/hooks/views/res.view.js

@@ -77,7 +77,7 @@ module.exports = function _addResViewMethod(req, res, next) {
 		relPathToView = '' + relPathToView + '';
 
 		// TODO: determine if this deep clone is necessary
-		locals = _.cloneDeep(locals || {});
+		locals = locals || {};
 
 		// Mixin locals from req.options
 		if (req.options.locals) {