Use ContainerNode::hasChildren() instead of firstChild() in conditionals

Source/core/dom/ScriptLoader.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 166 matching lines @@
         wasParserInserted = true;
         m_parserInserted = false;
     } else {
         wasParserInserted = false;
     }
 
     if (wasParserInserted && !client->asyncAttributeValue())
         m_forceAsync = true;
 
     // FIXME: HTML5 spec says we should check that all children are either comments or empty text nodes.
-    if (!client->hasSourceAttribute() && !m_element->firstChild())
+    if (!client->hasSourceAttribute() && !m_element->hasChildren())
         return false;
 
     if (!m_element->inDocument())
         return false;
 
     if (!isScriptTypeSupported(supportLegacyTypes))
         return false;
 
     if (wasParserInserted) {
         m_parserInserted = true;
@@ skipping 243 matching lines @@
     if (isHTMLScriptLoader(element))
         return toHTMLScriptElement(element)->loader();
 
     if (isSVGScriptLoader(element))
         return toSVGScriptElement(element)->loader();
 
     return 0;
 }
 
 }