From 01f4e17d81cd8c331564b14fdece56f60d550d75 Mon Sep 17 00:00:00 2001
From: Daniel Lowrey <rdlowrey@gmail.com>
Date: Fri, 9 Dec 2016 10:55:40 -0500
Subject: [PATCH] Avoid fcall when possible

---
 lib/Observer.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/Observer.php b/lib/Observer.php
index e5a65080..39d8ea41 100644
--- a/lib/Observer.php
+++ b/lib/Observer.php
@@ -122,7 +122,7 @@ public function next(): Promise {
 
         ++$this->position;
 
-        if (\array_key_exists($this->position, $this->values)) {
+        if (isset($this->values[$this->position]) || \array_key_exists($this->position, $this->values)) {
             return new Success(true);
         }