[ast] Fix a comment about placeholder for computed property values

R=mvstanton@chromium.org

Change-Id: Ia9b5b6e3b80334555faddd1fbc70995d414295a6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2960889Reviewed-by: Michael Stanton <mvstanton@chromium.org>
Commit-Queue: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#75144}

src/ast/ast.cc

@@ -482,9 +482,9 @@ void ObjectLiteral::BuildBoilerplateDescription(IsolateT* isolate) {
       m_literal->BuildConstants(isolate);
     }
 
-    // Add CONSTANT and COMPUTED properties to boilerplate. Use undefined
-    // value for COMPUTED properties, the real value is filled in at
-    // runtime. The enumeration order is maintained.
+    // Add CONSTANT and COMPUTED properties to boilerplate. Use the
+    // 'uninitialized' Oddball for COMPUTED properties, the real value is filled
+    // in at runtime. The enumeration order is maintained.
     Literal* key_literal = property->key()->AsLiteral();
     uint32_t element_index = 0;
     Handle<Object> key =
@@ -493,10 +493,7 @@ void ObjectLiteral::BuildBoilerplateDescription(IsolateT* isolate) {
                   ->template NewNumberFromUint<AllocationType::kOld>(
                       element_index)
             : Handle<Object>::cast(key_literal->AsRawPropertyName()->string());
-
     Handle<Object> value = GetBoilerplateValue(property->value(), isolate);
-
-    // Add name, value pair to the fixed array.
     boilerplate_description->set_key_value(position++, *key, *value);
   }