From 254912aee51ee9e080b00f49094ba445250a6ed6 Mon Sep 17 00:00:00 2001
From: Ian Gray <iangray001@github.com>
Date: Thu, 13 Jan 2022 21:29:22 +0000
Subject: [PATCH] Add a null check in updateControl

This means that calling any updates before the GUI is created will
now not cause a crash.
---
 src/ESPUI.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/ESPUI.cpp b/src/ESPUI.cpp
index 58e5081..43b8fb7 100644
--- a/src/ESPUI.cpp
+++ b/src/ESPUI.cpp
@@ -763,6 +763,11 @@ void ESPUIClass::updateControl(Control* control, int clientId)
         return;
     }
 
+    if (this->ws == nullptr)
+    {
+        return;
+    }
+
     String json;
     DynamicJsonDocument document(jsonUpdateDocumentSize);
     JsonObject root = document.to<JsonObject>();