previousRegionLogicalHeight not getting updated

Source/core/rendering/RenderFlowThread.cpp

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above
  *    copyright notice, this list of conditions and the following
  *    disclaimer.
@@ skipping 108 matching lines @@
     RenderFlowThread* m_renderFlowThread;
 };
 
 void RenderFlowThread::validateRegions()
 {
     if (m_regionsInvalidated) {
         m_regionsInvalidated = false;
         m_regionsHaveUniformLogicalHeight = true;
 
         if (hasRegions()) {
-            LayoutUnit previousRegionLogicalWidth = 0;
             LayoutUnit previousRegionLogicalHeight = 0;
             bool firstRegionVisited = false;
 
             for (RenderRegionList::iterator iter = m_regionList.begin(); iter != m_regionList.end(); ++iter) {
                 RenderRegion* region = *iter;
-                LayoutUnit regionLogicalWidth = region->pageLogicalWidth();
                 LayoutUnit regionLogicalHeight = region->pageLogicalHeight();
 
                 if (!firstRegionVisited) {
                     firstRegionVisited = true;
                 } else {
                     if (m_regionsHaveUniformLogicalHeight && previousRegionLogicalHeight != regionLogicalHeight)
                         m_regionsHaveUniformLogicalHeight = false;
                 }
 
-                previousRegionLogicalWidth = regionLogicalWidth;
+                previousRegionLogicalHeight = regionLogicalHeight;
             }
         }
     }
 
     updateLogicalWidth(); // Called to get the maximum logical width for the region.
     updateRegionsFlowThreadPortionRect();
 }
 
 void RenderFlowThread::layout()
 {
@@ skipping 514 matching lines @@
 {
     if (!m_renderFlowThread)
         return;
     RenderView* view = m_renderFlowThread->view();
     ASSERT(view->flowThreadController()->currentRenderFlowThread() == m_renderFlowThread);
     view->flowThreadController()->setCurrentRenderFlowThread(m_previousRenderFlowThread);
 }
 
 
 } // namespace WebCore