Add missing free for the allocated memory from vasprintf().

Source/core/xml/parser/XMLDocumentParser.cpp

 /*
  * Copyright (C) 2000 Peter Kelly (pmk@post.com)
  * Copyright (C) 2005, 2006, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008 Holger Hans Peter Freyther
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 1069 matching lines @@
     char* formattedMessage;
     if (vasprintf(&formattedMessage, message, args) == -1)
         return;
 #else
     char formattedMessage[1024];
     vsnprintf(formattedMessage, sizeof(formattedMessage) - 1, message, args);
 #endif
 
     if (m_parserPaused) {
         m_pendingCallbacks.append(adoptPtr(new PendingErrorCallback(type, reinterpret_cast<const xmlChar*>(formattedMessage), lineNumber(), columnNumber())));
+#if HAVE(VASPRINTF)
+        free(formattedMessage);
+#endif
         return;
     }
 
     handleError(type, formattedMessage, textPosition());
 
 #if HAVE(VASPRINTF)
     free(formattedMessage);
 #endif
 }
 
@@ skipping 498 matching lines @@
     sax.initialized = XML_SAX2_MAGIC;
     RefPtr<XMLParserContext> parser = XMLParserContext::createStringParser(&sax, &state);
     String parseString = "<?xml version=\"1.0\"?><attrs " + string + " />";
     parseChunk(parser->context(), parseString);
     finishParsing(parser->context());
     attrsOK = state.gotAttributes;
     return state.attributes;
 }
 
 } // namespace WebCore