From c102821e37d1c1cec99580bfdba13bff9bd58de1 Mon Sep 17 00:00:00 2001
From: Stephen Blott
Date: Tue, 28 Apr 2015 12:38:30 +0100
Subject: Fix vomnibar start-up messages.

---
 content_scripts/ui_component.coffee | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'content_scripts')

diff --git a/content_scripts/ui_component.coffee b/content_scripts/ui_component.coffee
index fc40e1ca..77c52d3d 100644
--- a/content_scripts/ui_component.coffee
+++ b/content_scripts/ui_component.coffee
@@ -33,7 +33,8 @@ class UIComponent
       @iframeElement.contentWindow.postMessage secret, chrome.runtime.getURL(""), [messageChannel.port2]
 
   postMessage: (message) ->
-    @iframePort.postMessage message
+    # We use "?" here because the iframe port is initialized asynchronously, and may not yet be ready.
+    @iframePort?.postMessage message
 
   activate: (@options) ->
     @postMessage @options if @options?
-- 
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