From fada958e72288d8dea18910341d2d0482eaab0a5 Mon Sep 17 00:00:00 2001
From: David Rowe <david@ctrlaltstudio.com>
Date: Sat, 28 Apr 2018 19:57:45 +1200
Subject: [PATCH] Handle possibly undefined value

---
 tools/jsdoc/plugins/hifi.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/jsdoc/plugins/hifi.js b/tools/jsdoc/plugins/hifi.js
index 061a3fe57d..5092e8b809 100644
--- a/tools/jsdoc/plugins/hifi.js
+++ b/tools/jsdoc/plugins/hifi.js
@@ -107,7 +107,7 @@ exports.handlers = {
             // Append an Available In: table at the end of the namespace description.
             if (rows.length > 0) {
                 var table = "<br><br><table><tr><th>Available in:</th><td>" + rows.join("</td><td>") + "</td></tr></table>";
-                e.doclet.description = e.doclet.description + table;
+                e.doclet.description = (e.doclet.description ? e.doclet.description : "") + table;
             }
         }
     }