Update -internal.js

Author: hashplus

lib/es6-promise/-internal.js

@@ -87,7 +87,7 @@ function handleOwnThenable(promise, thenable) {
 function handleMaybeThenable(promise, maybeThenable, then) {
   if (maybeThenable.constructor === promise.constructor &&
       then === originalThen &&
-      constructor.resolve === originalResolve) {
+      maybeThenable.constructor.resolve === originalResolve) {
     handleOwnThenable(promise, maybeThenable);
   } else {
     if (then === GET_THEN_ERROR) {