HTMLViewSourceParser should pumpTokenizer only if not detached

third_party/WebKit/Source/core/html/parser/HTMLViewSourceParser.cpp

 /*
  * Copyright (C) 2010 Google, Inc. 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.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 55 matching lines @@
 void HTMLViewSourceParser::append(const String& input)
 {
     m_input.appendToEnd(input);
     pumpTokenizer();
 }
 
 void HTMLViewSourceParser::finish()
 {
     if (!m_input.haveSeenEndOfFile())
         m_input.markEndOfFile();
-    pumpTokenizer();
+
+    if (!isDetached())
+        pumpTokenizer();
+
     document()->finishedParsing();
 }
 
 } // namespace blink