Initialize properly availableHeight in computePercentageLogicalHeight

third_party/WebKit/Source/core/layout/LayoutBox.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Adobe Systems Incorporated. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 2821 matching lines @@
     LayoutUnit rootMarginBorderPaddingHeight;
     while (!cb->isLayoutView() && skipContainingBlockForPercentHeightCalculation(cb)) {
         if (cb->isBody() || cb->isDocumentElement())
             rootMarginBorderPaddingHeight += cb->marginBefore() + cb->marginAfter() + cb->borderAndPaddingLogicalHeight();
         skippedAutoHeightContainingBlock = true;
         containingBlockChild = cb;
         cb = cb->containingBlock();
     }
     cb->addPercentHeightDescendant(const_cast<LayoutBox*>(this));
 
-    LayoutUnit availableHeight;
+    LayoutUnit availableHeight(-1);
     if (isHorizontalWritingMode() != cb->isHorizontalWritingMode()) {
         availableHeight = containingBlockChild->containingBlockLogicalWidthForContent();
     } else if (hasOverrideContainingBlockLogicalHeight()) {
         availableHeight = overrideContainingBlockContentLogicalHeight();
     } else if (cb->isTableCell()) {
         if (!skippedAutoHeightContainingBlock) {
             // Table cells violate what the CSS spec says to do with heights. Basically we
             // don't care if the cell specified a height or not. We just always make ourselves
             // be a percentage of the cell's current content height.
             if (!cb->hasOverrideLogicalContentHeight()) {
@@ skipping 2021 matching lines @@
     LayoutRect rect = frameRect();
 
     LayoutBlock* block = containingBlock();
     if (block)
         block->adjustChildDebugRect(rect);
 
     return rect;
 }
 
 } // namespace blink