Simplify

src/Runtime/LoopIterator.php

@@ -45,14 +45,13 @@ public function __construct($seq)
             $this->seq = new \ArrayIterator($seq);
         } elseif ($seq instanceof \IteratorAggregate) {
             do {
-                /** @var \Iterator<TKey, TValue> $seq */
                 $seq = $seq->getIterator();
             } while ($seq instanceof \IteratorAggregate);
-            $this->seq = $seq;
-        } elseif ($seq instanceof \Iterator) {
+            /** @var \Iterator<TKey, TValue> $seq */
             $this->seq = $seq;
         } elseif (is_iterable($seq)) {
-            $this->seq = new \IteratorIterator($seq);
+            /** @var \Iterator<TKey, TValue> $seq */
+            $this->seq = $seq;
         } else {
             $this->seq = new \EmptyIterator();
         }