Bindings: use |holder| local variable in attribute getters and setters

Source/bindings/tests/results/V8TestException.cpp

Index: Source/bindings/tests/results/V8TestException.cpp
diff --git a/Source/bindings/tests/results/V8TestException.cpp b/Source/bindings/tests/results/V8TestException.cpp
index 2873a9baa400ff826fb7e50f7953008231b40130..63e246184e9663a3cc5fd6dc42d85c358d82a398 100644
--- a/Source/bindings/tests/results/V8TestException.cpp
+++ b/Source/bindings/tests/results/V8TestException.cpp
@@ -44,7 +44,8 @@ template <typename T> void V8_USE(T) { }
 
 static void readonlyUnsignedShortAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestException* impl = V8TestException::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestException* impl = V8TestException::toNative(holder);
     v8SetReturnValueUnsigned(info, impl->readonlyUnsignedShortAttribute());
 }
 
@@ -57,7 +58,8 @@ static void readonlyUnsignedShortAttributeAttributeGetterCallback(v8::Local<v8::
 
 static void readonlyStringAttributeAttributeGetter(const v8::PropertyCallbackInfo<v8::Value>& info)
 {
-    TestException* impl = V8TestException::toNative(info.Holder());
+    v8::Handle<v8::Object> holder = info.Holder();
+    TestException* impl = V8TestException::toNative(holder);
     v8SetReturnValueString(info, impl->readonlyStringAttribute(), info.GetIsolate());
 }