From ae8ce1e4d975d6aefc947a008ed8a82eec1312d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=9C=80=E8=90=8C=E5=B0=8F=E6=B1=90?= <sumneko@hotmail.com>
Date: Mon, 8 Nov 2021 16:55:44 +0800
Subject: cleanup

---
 script/vm/getDocs.lua | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'script/vm/getDocs.lua')

diff --git a/script/vm/getDocs.lua b/script/vm/getDocs.lua
index 748d17c2..ff6e6ba3 100644
--- a/script/vm/getDocs.lua
+++ b/script/vm/getDocs.lua
@@ -257,6 +257,9 @@ function vm.isNoDiscard(value, deep)
 end
 
 local function isCalledInFunction(param)
+    if not param.ref then
+        return false
+    end
     local func = guide.getParentFunction(param)
     for _, ref in ipairs(param.ref) do
         if ref.type == 'getlocal' then
-- 
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