From 8cbd7a12c9eba8677c7f1160913c30f8901ab29a Mon Sep 17 00:00:00 2001
From: Kris Maglione <maglione.k@gmail.com>
Date: Fri, 14 Jul 2017 10:50:54 -0700
Subject: [PATCH] Bug 1381023: Follow-up: Fix xpcshell failure.

MozReview-Commit-ID: BB8ItETtRMb

--HG--
extra : rebase_source : 81885a8417d83dcae6b0a3896483f0a60e56cb8b
---
 toolkit/components/extensions/ExtensionParent.jsm | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/toolkit/components/extensions/ExtensionParent.jsm b/toolkit/components/extensions/ExtensionParent.jsm
index 3f3e89c96939..a4f1db1c5395 100644
--- a/toolkit/components/extensions/ExtensionParent.jsm
+++ b/toolkit/components/extensions/ExtensionParent.jsm
@@ -245,11 +245,13 @@ ProxyMessenger = {
           result = res;
         }
       } catch (e) {
-        if (e.result !== MessageChannel.RESULT_NO_HANDLER &&
-            e.result !== MessageChannel.RESULT_NO_RESPONSE) {
+        if (e.result === MessageChannel.RESULT_NO_RESPONSE) {
+          // Ignore.
+        } else if (e.result === MessageChannel.RESULT_NO_HANDLER) {
+          failures++;
+        } else {
           throw e;
         }
-        failures++;
       }
     };