From 86555d39a9c9014d08b3b0fbee8ddd1c1eb33e52 Mon Sep 17 00:00:00 2001
From: ChristopherKiss <24984762+ChristopherKiss@users.noreply.github.com>
Date: Fri, 23 Aug 2019 12:29:10 +1000
Subject: [PATCH] ensure valid status is passed to error handler

---
 lib/transports/polling-xhr.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/transports/polling-xhr.js b/lib/transports/polling-xhr.js
index cc16d9dc9..8aeef5cd9 100755
--- a/lib/transports/polling-xhr.js
+++ b/lib/transports/polling-xhr.js
@@ -255,7 +255,7 @@ Request.prototype.create = function () {
           // make sure the `error` event handler that's user-set
           // does not throw in the same tick and gets caught here
           setTimeout(function () {
-            self.onError(xhr.status);
+            self.onError(typeof xhr.status === 'number' ? xhr.status : 0);
           }, 0);
         }
       };