src/jdk/nashorn/internal/runtime/arrays/MapIterator.java

@@ -64,12 +64,11 @@
                 break;
             }
             bumpIndex();
         }
 
-        // special case - balk at iterating to infinity or MAX_UINT
-        return (length != JSType.MAX_UINT) && indexInArray();
+        return indexInArray();
     }
 
     @Override
     public Object next() {
         if (indexInArray()) {