Fix style erros in XPath-related files.

Source/core/xml/XPathVariableReference.cpp

 /*
  * Copyright 2005 Frerich Raabe <raabe@kde.org>
  * Copyright (C) 2006 Apple Computer, Inc.
  *
  * 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.
@@ skipping 22 matching lines @@
 namespace XPath {
 
 VariableReference::VariableReference(const String& name)
     : m_name(name)
 {
 }
 
 Value VariableReference::evaluate() const
 {
     HashMap<String, String>& bindings = evaluationContext().variableBindings;
-    if (!bindings.contains(m_name))
-        // FIXME: Is this the right thing to do if an unknown variable is referenced?
+    if (!bindings.contains(m_name)) {
+        // FIXME: Is this the right thing to do if an unknown variable is
+        // referenced?
         return "";
+    }
     return bindings.get(m_name);
 }
 
 }
 }