Check relay/bridge properties exist before accessing them

lib/tor.js

@@ -15,8 +15,12 @@ module.exports = {
 			.details(query)
 			.then(response => {
 				const details = response.body;
-				details.relays.forEach(setNodeType('relay'));
-				details.bridges.forEach(setNodeType('bridge'));
+				if (details.relays) {
+					details.relays.forEach(setNodeType('relay'));
+				}
+				if (details.bridges) {
+					details.bridges.forEach(setNodeType('bridge'));
+				}
 				return details.relays.concat(details.bridges);
 			});
 	},
@@ -25,10 +29,10 @@ module.exports = {
 			.details({ lookup: id })
 			.then(response => {
 				const details = response.body;
-				if (details.relays[0]) {
+				if (details.relays && details.relays[0]) {
 					details.relays[0].type = 'relay';
 					return details.relays[0];
-				} else if (details.bridges[0]) {
+				} else if (details.bridges && details.bridges[0]) {
 					details.bridges[0].type = 'bridge';
 					return details.bridges[0];
 				}