| Index: Source/core/css/CSSValue.cpp | 
| diff --git a/Source/core/css/CSSValue.cpp b/Source/core/css/CSSValue.cpp | 
| index c32bab76e10556a24eec72a80c65028a423ad5b6..9f14cc308697d53465a1a2cab9edbe93455e4640 100644 | 
| --- a/Source/core/css/CSSValue.cpp | 
| +++ b/Source/core/css/CSSValue.cpp | 
| @@ -412,7 +412,7 @@ void CSSValue::destroy() | 
| delete static_cast<CSSLineBoxContainValue*>(this); | 
| return; | 
| case CalculationClass: | 
| -        delete static_cast<CSSCalcValue*>(this); | 
| +        delete toCSSCalcValue(this); | 
| return; | 
| case ImageSetClass: | 
| delete toCSSImageSetValue(this); | 
|  |