allow paid user to show locked problems

Author: C4Phone

lib/leetcode_client.js

@@ -116,8 +116,11 @@ var aceCtrl = {
 };
 
 leetcodeClient.getProblem = function(problem, cb) {
-  request(problem.link, function(e, resp, body) {
+  var opts = makeOpts();
+  opts.url = problem.link;
+  request(opts, function(e, resp, body) {
     e = checkError(e, resp, 200);
+    // FIXME: if session expired, this will still return 200
     if (e) return cb(e);
 
     var $ = cheerio.load(body);