Use forEach instead of map when mutating

lib/tor.js

@@ -15,8 +15,8 @@ module.exports = {
 			.details(query)
 			.then(response => {
 				const details = response.body;
-				details.relays.map(setNodeType('relay'));
-				details.bridges.map(setNodeType('bridge'));
+				details.relays.forEach(setNodeType('relay'));
+				details.bridges.forEach(setNodeType('bridge'));
 				return details.relays.concat(details.bridges);
 			});
 	},