Oilpan: add missing pointer initialization following r362974.

third_party/WebKit/Source/core/css/parser/CSSPropertyParser.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "core/css/parser/CSSPropertyParser.h"
 
 #include "core/StylePropertyShorthand.h"
 #include "core/css/CSSCalculationValue.h"
 #include "core/css/CSSCursorImageValue.h"
@@ skipping 2195 matching lines @@
             return nullptr;
     }
 
     CSSValueID id = range.peek().id();
     if (!range.atEnd() && m_context.useCounter()) {
         if (id == CSSValueWebkitZoomIn)
             m_context.useCounter()->count(UseCounter::PrefixedCursorZoomIn);
         else if (id == CSSValueWebkitZoomOut)
             m_context.useCounter()->count(UseCounter::PrefixedCursorZoomOut);
     }
-    RefPtrWillBeRawPtr<CSSValue> cursorType;
+    RefPtrWillBeRawPtr<CSSValue> cursorType = nullptr;
     if (id == CSSValueHand) {
         if (inQuirksMode()) // Non-standard behavior
             cursorType = cssValuePool().createIdentifierValue(CSSValuePointer);
         range.consumeIncludingWhitespace();
     } else if ((id >= CSSValueAuto && id <= CSSValueWebkitZoomOut) || id == CSSValueCopy || id == CSSValueNone) {
         cursorType = consumeIdent(range);
     }
 
     if (!list)
         return cursorType.release();
@@ skipping 808 matching lines @@
         return consumeShorthandGreedily(flexFlowShorthand(), important);
     case CSSPropertyWebkitColumnRule:
         return consumeShorthandGreedily(webkitColumnRuleShorthand(), important);
     default:
         m_currentShorthand = oldShorthand;
         return false;
     }
 }
 
 } // namespace blink