Merge 125343

Source/WebCore/rendering/RenderQuote.cpp

Index: Source/WebCore/rendering/RenderQuote.cpp
===================================================================
--- Source/WebCore/rendering/RenderQuote.cpp	(revision 127630)
+++ Source/WebCore/rendering/RenderQuote.cpp	(working copy)
@@ -292,6 +292,8 @@
     if (!m_previous) {
         m_next = view()->renderQuoteHead();
         view()->setRenderQuoteHead(this);
+        if (m_next)
+            m_next->m_previous = this;
     }
     m_attached = true;
 
@@ -299,7 +301,9 @@
         quote->updateDepth();
 
     ASSERT(!m_next || m_next->m_attached);
+    ASSERT(!m_next || m_next->m_previous == this);
     ASSERT(!m_previous || m_previous->m_attached);
+    ASSERT(!m_previous || m_previous->m_next == this);
 }
 
 void RenderQuote::detachQuote()