v2.3.12: correct typo in name of private option

index.js

@@ -505,7 +505,7 @@ Greenlock.create = function (gl) {
       var safehost = host[0].replace(SERVERNAME_G, '');
 
       // if there were unallowed characters, complain
-      if (!gl.__sni_allow_dangerous_name && safehost.length !== host[0].length) {
+      if (!gl.__sni_allow_dangerous_names && safehost.length !== host[0].length) {
         res.statusCode = 400;
         res.end("Malformed HTTP Header: 'Host: " + host[0] + "'");
         return;

package.json

@@ -1,6 +1,6 @@
 {
   "name": "greenlock",
-  "version": "2.3.11",
+  "version": "2.3.12",
   "description": "Let's Encrypt for node.js on npm",
   "main": "index.js",
   "files": [