Expanded code in CompareCSSValuePtr to be more readable

Source/core/css/CSSValue.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * 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
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 199 matching lines @@
         if (firstPtr == secondPtr || (firstPtr && secondPtr && firstPtr->equals(*secondPtr)))
             continue;
         return false;
     }
     return true;
 }
 
 template<typename CSSValueType>
 inline bool compareCSSValuePtr(const RefPtr<CSSValueType>& first, const RefPtr<CSSValueType>& second)
 {
-    return first ? second && first->equals(*second) : !second;
+    if (first == second)
+        return true;
+    if (!first || !second)
+        return false;
+    return first->equals(*second);
 }
 
 template<typename CSSValueType>
 inline bool compareCSSValuePtr(const RawPtr<CSSValueType>& first, const RawPtr<CSSValueType>& second)
 {
-    return first ? second && first->equals(*second) : !second;
+    if (first == second)
+        return true;
+    if (!first || !second)
+        return false;
+    return first->equals(*second);
 }
 
 template<typename CSSValueType>
 inline bool compareCSSValuePtr(const Member<CSSValueType>& first, const Member<CSSValueType>& second)
 {
-    return first ? second && first->equals(*second) : !second;
+    if (first == second)
+        return true;
+    if (!first || !second)
+        return false;
+    return first->equals(*second);
 }
 
 #define DEFINE_CSS_VALUE_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, CSSValue, value, value->predicate, value.predicate)
 
 } // namespace blink
 
 #endif // CSSValue_h