From 8d04c3b8507a6e679c2aa20651c94b00d0913527 Mon Sep 17 00:00:00 2001
From: dmiller <dmiller@e0a8ed71-7df4-0310-8962-fdc924857419>
Date: Thu, 1 Jun 2017 17:45:07 +0000
Subject: [PATCH] Avoid a crash if ldap decode fails in sslcert. See #888

---
 nselib/sslcert.lua | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nselib/sslcert.lua b/nselib/sslcert.lua
index 4b89c8941..d5f5d084b 100644
--- a/nselib/sslcert.lua
+++ b/nselib/sslcert.lua
@@ -336,7 +336,7 @@ StartTLS = {
     if resultCode ~= 0 then
       starttls_supported(host, port, false)
       stdnse.debug1(string.format(
-        "STARTTLS failed (LDAP error code is: %d)", resultCode))
+        "STARTTLS failed (LDAP error code is: %s)", tonumber(resultCode) or "not a number"))
       return false, "STARTTLS failed"
     end