[promises] remove kPending check in RejectPromise

src/js/promise.js

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 (function(global, utils, extrasUtils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 284 matching lines @@
     }
   }
   %PromiseFulfill(promise, kFulfilled, resolution,
                   promiseFulfillReactionsSymbol);
   PromiseSet(promise, kFulfilled, resolution);
 }
 
 // ES#sec-rejectpromise
 // RejectPromise ( promise, reason )
 function RejectPromise(promise, reason, debugEvent) {
-  // Check promise status to confirm that this reject has an effect.
   // Call runtime for callbacks to the debugger or for unhandled reject.
   // The debugEvent parameter sets whether a debug ExceptionEvent should
   // be triggered. It should be set to false when forwarding a rejection
   // rather than creating a new one.
-  if (GET_PRIVATE(promise, promiseStateSymbol) === kPending) {
-    // This check is redundant with checks in the runtime, but it may help
-    // avoid unnecessary runtime calls.
-    if ((debugEvent && DEBUG_IS_ACTIVE) ||
-        !HAS_DEFINED_PRIVATE(promise, promiseHasHandlerSymbol)) {
+  // This check is redundant with checks in the runtime, but it may help
+  // avoid unnecessary runtime calls.
+  if ((debugEvent && DEBUG_IS_ACTIVE) ||
+      !HAS_DEFINED_PRIVATE(promise, promiseHasHandlerSymbol)) {
       %PromiseRejectEvent(promise, reason, debugEvent);

[adamk, 2016/10/26 12:05:00]

Nit: indentation is off.

-    }
   }
   %PromiseFulfill(promise, kRejected, reason, promiseRejectReactionsSymbol)
   PromiseSet(promise, kRejected, reason);
 }
 
 // Export to bindings
 function DoRejectPromise(promise, reason) {
   return RejectPromise(promise, reason, true);
 }
 
@@ skipping 343 matching lines @@
   to.PromiseThen = PromiseThen;
 
   to.GlobalPromise = GlobalPromise;
   to.NewPromiseCapability = NewPromiseCapability;
   to.PerformPromiseThen = PerformPromiseThen;
   to.ResolvePromise = ResolvePromise;
   to.RejectPromise = RejectPromise;
 });
 
 })