From f640b8d77de5592cc615aed26fa4e1820b993658 Mon Sep 17 00:00:00 2001
From: Mats Palmgren <mats@mozilla.com>
Date: Tue, 24 Jun 2014 17:52:18 +0000
Subject: [PATCH] Bug 1025212 - Initialize 'last' to silence a static analyzer
 warning.  r=dholbert

---
 layout/base/FrameLayerBuilder.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/layout/base/FrameLayerBuilder.cpp b/layout/base/FrameLayerBuilder.cpp
index 118a48029d09..915fc6c2ce45 100644
--- a/layout/base/FrameLayerBuilder.cpp
+++ b/layout/base/FrameLayerBuilder.cpp
@@ -3509,7 +3509,8 @@ PredictScaleForContent(nsIFrame* aFrame, nsIFrame* aAncestorWithScale,
 gfxSize
 FrameLayerBuilder::GetThebesLayerScaleForFrame(nsIFrame* aFrame)
 {
-  nsIFrame* last;
+  MOZ_ASSERT(aFrame, "need a frame");
+  nsIFrame* last = nullptr;
   for (nsIFrame* f = aFrame; f; f = nsLayoutUtils::GetCrossDocParentFrame(f)) {
     last = f;