From 74d7a252ba7ab2d191e9a376b76e09b8ba4c9aab Mon Sep 17 00:00:00 2001
From: 1yx <onewhyaxe@gmail.com>
Date: Fri, 20 Mar 2020 17:03:32 +0800
Subject: [PATCH] Fix: solution.discuss throw error when session.argv is empty

---
 plugins/solution.discuss.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/solution.discuss.js b/plugins/solution.discuss.js
index e78b90a..ae86ac9 100644
--- a/plugins/solution.discuss.js
+++ b/plugins/solution.discuss.js
@@ -73,7 +73,7 @@ function getSolution(problem, lang, cb) {
 
 plugin.getProblem = function(problem, cb) {
   plugin.next.getProblem(problem, function(e, problem) {
-    if (e || !session.argv.solution) return cb(e, problem);
+    if (e || !session.argv || !session.argv.solution) return cb(e, problem);
 
     var lang = session.argv.lang;
     getSolution(problem, lang, function(e, solution) {