From 8be5a8b7a38e347f338827f88bda98a0d34b05f0 Mon Sep 17 00:00:00 2001
From: Jason Quense <monastic.panic@gmail.com>
Date: Fri, 8 Dec 2017 14:51:25 -0500
Subject: [PATCH] unnecessary null check check

---
 packages/react-dom/src/client/ReactDOMFiberComponent.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/react-dom/src/client/ReactDOMFiberComponent.js b/packages/react-dom/src/client/ReactDOMFiberComponent.js
index 67efb8cdf6eea..8ca86a240abde 100644
--- a/packages/react-dom/src/client/ReactDOMFiberComponent.js
+++ b/packages/react-dom/src/client/ReactDOMFiberComponent.js
@@ -668,7 +668,7 @@ export function diffProperties(
   }
   for (propKey in nextProps) {
     const nextProp = nextProps[propKey];
-    const lastProp = lastProps != null ? lastProps[propKey] : undefined;
+    const lastProp = lastProps[propKey];
     if (
       !nextProps.hasOwnProperty(propKey) ||
       nextProp === lastProp ||