MQParser memory leak fix

Source/core/css/CSSParserValues.cpp

Index: Source/core/css/CSSParserValues.cpp
diff --git a/Source/core/css/CSSParserValues.cpp b/Source/core/css/CSSParserValues.cpp
index 484272de759de25a1b11febfb763ab2920198f03..86caffe35590e95f7b95135bd1030ef33633e1c3 100644
--- a/Source/core/css/CSSParserValues.cpp
+++ b/Source/core/css/CSSParserValues.cpp
@@ -29,17 +29,28 @@ namespace WebCore {
 
 using namespace WTF;
 
-CSSParserValueList::~CSSParserValueList()
+static void destroy(Vector<CSSParserValue, 4>& values)
 {
-    size_t numValues = m_values.size();
+    size_t numValues = values.size();
     for (size_t i = 0; i < numValues; i++) {
-        if (m_values[i].unit == CSSParserValue::Function)
-            delete m_values[i].function;
-        else if (m_values[i].unit == CSSParserValue::ValueList)
-            delete m_values[i].valueList;
+        if (values[i].unit == CSSParserValue::Function)
+            delete values[i].function;
+        else if (values[i].unit == CSSParserValue::ValueList)
+            delete values[i].valueList;
     }
 }
 
+void CSSParserValueList::destroyAndClear()
+{
+    destroy(m_values);
+    clearAndLeakValues();
+}
+
+CSSParserValueList::~CSSParserValueList()
+{
+    destroy(m_values);
+}
+
 void CSSParserValueList::addValue(const CSSParserValue& v)
 {
     m_values.append(v);
@@ -54,7 +65,7 @@ void CSSParserValueList::stealValues(CSSParserValueList& valueList)
 {
     for (unsigned i = 0; i < valueList.size(); ++i)
         m_values.append(*(valueList.valueAt(i)));
-    valueList.clear();
+    valueList.clearAndLeakValues();
 }
 
 PassRefPtrWillBeRawPtr<CSSValue> CSSParserValue::createCSSValue()