From 44889cd5a196437c95bd55e6b0f2e4b4eba23232 Mon Sep 17 00:00:00 2001
From: Pol Dellaiera <pol.dellaiera@protonmail.com>
Date: Thu, 2 Jan 2020 12:49:28 +0100
Subject: [PATCH] Minor rewrite.

---
 src/Operation/Product.php | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/Operation/Product.php b/src/Operation/Product.php
index bda26c433..c0cdd4cf5 100644
--- a/src/Operation/Product.php
+++ b/src/Operation/Product.php
@@ -63,9 +63,7 @@ private function cartesian(array $iterators): Generator
         $last = array_pop($iterators);
 
         if (null === $last) {
-            yield [];
-
-            return;
+            return yield [];
         }
 
         foreach ($this->cartesian($iterators) as $item) {