From 23935bae6d6fbc6173140096488fd03da9683a4c Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Fri, 17 Apr 2015 02:53:34 +0400
Subject: [PATCH] guard against missing session

---
 plugins/c9.ide.ace/ace.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/c9.ide.ace/ace.js b/plugins/c9.ide.ace/ace.js
index fdb48892..d1f1e89c 100644
--- a/plugins/c9.ide.ace/ace.js
+++ b/plugins/c9.ide.ace/ace.js
@@ -1223,7 +1223,7 @@ define(function(require, exports, module) {
             tabs.getTabs().forEach(function(tab) {
                 if (tab.editorType == "ace") {
                     var c9Session = tab.document.getSession();
-                    if (c9Session.session)
+                    if (c9Session && c9Session.session)
                         detectSyntax(c9Session, tab.path);
                 }
             });