Merge 129469 - adoptNode() shouldn't reset ownerDocument if the source node failed to remove itself

Source/WebCore/dom/Document.cpp

Index: Source/WebCore/dom/Document.cpp
===================================================================
--- Source/WebCore/dom/Document.cpp	(revision 129517)
+++ Source/WebCore/dom/Document.cpp	(working copy)
@@ -1065,8 +1065,11 @@
                 return 0;
             }
         }
-        if (source->parentNode())
+        if (source->parentNode()) {
             source->parentNode()->removeChild(source.get(), ec);
+            if (ec)
+                return 0;
+        }
     }
 
     this->adoptIfNeeded(source.get());