Make sure allocated objects in PrologueCallbackAlloc and EpilogueCallbackAlloc API test are used.

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index bbda73af76422710ae7dddcf9307a66283c39924..27178474c3b197824135279a81be781c5e19ae08 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -18742,7 +18742,7 @@ void PrologueCallbackAlloc(v8::Isolate* isolate,
   SimulateFullSpace(CcTest::heap()->new_space());
 
   Local<Object> obj = Object::New(isolate);
-  ASSERT(!obj.IsEmpty());
+  CHECK(!obj.IsEmpty());
 
   CcTest::heap()->CollectAllGarbage(
       i::Heap::Heap::kAbortIncrementalMarkingMask);
@@ -18762,7 +18762,7 @@ void EpilogueCallbackAlloc(v8::Isolate* isolate,
   SimulateFullSpace(CcTest::heap()->new_space());
 
   Local<Object> obj = Object::New(isolate);
-  ASSERT(!obj.IsEmpty());
+  CHECK(!obj.IsEmpty());
 
   CcTest::heap()->CollectAllGarbage(
       i::Heap::Heap::kAbortIncrementalMarkingMask);