From aa408886316987f47778b0cf0a936867ab215138 Mon Sep 17 00:00:00 2001
From: Jean-Yves Avenard <jyavenard@mozilla.com>
Date: Wed, 14 Sep 2016 11:20:41 +1000
Subject: [PATCH] Bug 1279348: Avoid division by 0. r=kentuckyfriedtakahe

MozReview-Commit-ID: DSwB3J9jADK

--HG--
extra : rebase_source : 147ba3e98d203ffcf7b477e2b38c63b1286fa881
---
 dom/media/MediaInfo.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dom/media/MediaInfo.h b/dom/media/MediaInfo.h
index 96f72a202426..5b63d7e12549 100644
--- a/dom/media/MediaInfo.h
+++ b/dom/media/MediaInfo.h
@@ -261,7 +261,8 @@ public:
   // container.
   nsIntRect ScaledImageRect(int64_t aWidth, int64_t aHeight) const
   {
-    if (aWidth == mImage.width && aHeight == mImage.height) {
+    if ((aWidth == mImage.width && aHeight == mImage.height) ||
+        !mImage.width || !mImage.height) {
       return ImageRect();
     }
     nsIntRect imageRect = ImageRect();