Fix unused variable bug in r7444.

BUG=
TEST=

Review URL: http://codereview.chromium.org/6759033

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7445 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/type-info.cc

@@ -358,6 +358,8 @@ ZoneMapList* TypeFeedbackOracle::CollectReceiverTypes(int position,
 void TypeFeedbackOracle::SetInfo(int position, Object* target) {
   MaybeObject* maybe_result = dictionary_->AtNumberPut(position, target);
   Object* result;
+  USE(maybe_result);
+  USE(result);
   // Dictionary has been allocated with sufficient size for all elements.
   ASSERT(maybe_result->ToObject(&result));
   ASSERT(*dictionary_ == result);