From ff74e0ff00832f9f2c80b869525fcc12a2d3ccf9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Adomas=20Ven=C4=8Dkauskas?= <adomas.ven@gmail.com>
Date: Tue, 18 Apr 2017 16:21:09 +0300
Subject: [PATCH] Do not return empty string for falsy arguments in
 Utilities.htmlSpecialChars

---
 chrome/content/zotero/xpcom/utilities.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chrome/content/zotero/xpcom/utilities.js b/chrome/content/zotero/xpcom/utilities.js
index 15a91dda95..691e0daa67 100644
--- a/chrome/content/zotero/xpcom/utilities.js
+++ b/chrome/content/zotero/xpcom/utilities.js
@@ -459,7 +459,7 @@ Zotero.Utilities = {
 	 * @return {String}
 	 */
 	"htmlSpecialChars":function(str) {
-		if (str && typeof str != 'string') {
+		if (str !== undefined && typeof str != 'string') {
 			str = str.toString();
 		}