From 8202a1633b2cfb4144936971bef31292b204a69b Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Wed, 5 Jul 2017 21:45:46 +0300
Subject: [PATCH] Fix crash in single instance forcing.

Local server communication is allowed before Messenger constructor.
---
 Telegram/SourceFiles/application.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Telegram/SourceFiles/application.cpp b/Telegram/SourceFiles/application.cpp
index c72829863..c280e4347 100644
--- a/Telegram/SourceFiles/application.cpp
+++ b/Telegram/SourceFiles/application.cpp
@@ -242,6 +242,7 @@ void Application::newInstanceConnected() {
 }
 
 void Application::readClients() {
+	// This method can be called before Messenger is constructed.
 	QString startUrl;
 	QStringList toSend;
 	for (LocalClients::iterator i = _localClients.begin(), e = _localClients.end(); i != e; ++i) {
@@ -286,7 +287,9 @@ void Application::readClients() {
 	if (!startUrl.isEmpty()) {
 		cSetStartUrl(startUrl);
 	}
-	Messenger::Instance().checkStartUrl();
+	if (auto messenger = Messenger::InstancePointer()) {
+		messenger->checkStartUrl();
+	}
 }
 
 void Application::removeClients() {