Fix unused variable in DeferredLegacyStyleInterpolationTest

Source/core/animation/interpolation/DeferredLegacyStyleInterpolationTest.cpp

Index: Source/core/animation/interpolation/DeferredLegacyStyleInterpolationTest.cpp
diff --git a/Source/core/animation/interpolation/DeferredLegacyStyleInterpolationTest.cpp b/Source/core/animation/interpolation/DeferredLegacyStyleInterpolationTest.cpp
index 6f437fe4e044c3f37115350e9f78c4355404c666..4c851f9648fa40453c4f06ee828a0d280d14477a 100644
--- a/Source/core/animation/interpolation/DeferredLegacyStyleInterpolationTest.cpp
+++ b/Source/core/animation/interpolation/DeferredLegacyStyleInterpolationTest.cpp
@@ -23,8 +23,8 @@ protected:
         if (propertyID == CSSPropertyFloodColor)
             parserMode = SVGAttributeMode;
         RefPtrWillBeRawPtr<MutableStylePropertySet> dummyStyle = MutableStylePropertySet::create();
-        bool ok = BisonCSSParser::parseValue(dummyStyle.get(), propertyID, string, false, parserMode, 0);
-        ASSERT(ok);
+        bool parseSuccess = BisonCSSParser::parseValue(dummyStyle.get(), propertyID, string, false, parserMode, 0);
+        ASSERT_UNUSED(parseSuccess, parseSuccess);
         return DeferredLegacyStyleInterpolation::interpolationRequiresStyleResolve(*dummyStyle->getPropertyCSSValue(propertyID));
     }
 };