From 9cb2b8167dce47fb9749a8e92e55b6892e2a5dd6 Mon Sep 17 00:00:00 2001
From: Dan Stillman <dstillman@zotero.org>
Date: Wed, 21 Feb 2018 10:21:10 -0500
Subject: [PATCH] Throw actual error if file open fails in md5Async()

---
 chrome/content/zotero/xpcom/utilities_internal.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/chrome/content/zotero/xpcom/utilities_internal.js b/chrome/content/zotero/xpcom/utilities_internal.js
index 07f7a8418c..f5b4385b3a 100644
--- a/chrome/content/zotero/xpcom/utilities_internal.js
+++ b/chrome/content/zotero/xpcom/utilities_internal.js
@@ -190,11 +190,13 @@ Zotero.Utilities.Internal = {
 		var path = (file instanceof Components.interfaces.nsIFile) ? file.path : file;
 		var hash;
 		try {
-			file = await OS.File.open(path);
-			hash = await readChunk(file);
+			var osFile = await OS.File.open(path);
+			hash = await readChunk(osFile);
 		}
 		finally {
-			await file.close();
+			if (osFile) {
+				await osFile.close();
+			}
 		}
 		return hash;
 	},