Remove unnecessary conditional check while deciding for XML viewer mode.

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 1420 matching lines @@
                 XMLDocumentParserScope scope(document()->cachedResourceLoader());
                 finishParsing(context());
             }
 
             m_context = 0;
         }
     }
 
     XMLTreeViewer xmlTreeViewer(document());
     bool xmlViewerMode = !m_sawError && !m_sawCSS && !m_sawXSLTransform && xmlTreeViewer.hasNoStyleInformation();
-    if (xmlViewerMode)
+    if (xmlViewerMode) {
         xmlTreeViewer.transformDocumentToTreeView();
-
-    if (m_sawXSLTransform) {
+    } else if (m_sawXSLTransform) {
         xmlDocPtr doc = xmlDocPtrForString(document()->cachedResourceLoader(), m_originalSourceForTransform.toString(), document()->url().string());
         document()->setTransformSource(adoptPtr(new TransformSource(doc)));
 
         document()->setParsing(false); // Make the document think it's done, so it will apply XSL stylesheets.
         document()->styleResolverChanged(RecalcStyleImmediately);
 
         // styleResolverChanged() call can detach the parser and null out its document.
         // In that case, we just bail out.
         if (isDetached())
             return;
@@ skipping 144 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