From 1d2b0272d3593fdec21f0dcc3bc7d5f871a191cb Mon Sep 17 00:00:00 2001
From: Nick Bourdakos <bourdakos@google.com>
Date: Tue, 4 Apr 2023 15:35:53 -0700
Subject: [PATCH] Fix crash when closing Wi-Fi LAN server socket

PiperOrigin-RevId: 521883606
---
 .../apple/Mediums/WiFiLAN/GNCWiFiLANServerSocket.m             | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/internal/platform/implementation/apple/Mediums/WiFiLAN/GNCWiFiLANServerSocket.m b/internal/platform/implementation/apple/Mediums/WiFiLAN/GNCWiFiLANServerSocket.m
index 27e7dbe6..d4163457 100644
--- a/internal/platform/implementation/apple/Mediums/WiFiLAN/GNCWiFiLANServerSocket.m
+++ b/internal/platform/implementation/apple/Mediums/WiFiLAN/GNCWiFiLANServerSocket.m
@@ -102,6 +102,9 @@
 }
 
 - (void)close {
+  if (_listener == nil) {
+    return;
+  }
   nw_listener_cancel(_listener);
   _listener = nil;
 }