From aa674a0ea5bb96af15d96af0f06afde4d0a7ccc7 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Fri, 23 Sep 2022 15:53:58 +0400
Subject: [PATCH] Fix UB in closing chat across all windows.

---
 Telegram/SourceFiles/core/application.cpp | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/Telegram/SourceFiles/core/application.cpp b/Telegram/SourceFiles/core/application.cpp
index 5879f21f6..7ba879a82 100644
--- a/Telegram/SourceFiles/core/application.cpp
+++ b/Telegram/SourceFiles/core/application.cpp
@@ -1205,11 +1205,9 @@ void Application::closeWindow(not_null<Window::Controller*> window) {
 
 void Application::closeChatFromWindows(not_null<PeerData*> peer) {
 	for (const auto &[history, window] : _secondaryWindows) {
-		if (!window) {
-			continue;
-		}
 		if (history->peer == peer) {
 			closeWindow(window.get());
+			break;
 		} else if (const auto session = window->sessionController()) {
 			if (session->activeChatCurrent().peer() == peer) {
 				session->showPeerHistory(