From 91a6632a1b70e100dc5c36905ca4315f896a427d Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Mon, 24 Feb 2020 12:57:24 +0400
Subject: [PATCH] Fix state assertion in reading requets.

---
 Telegram/SourceFiles/data/data_histories.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Telegram/SourceFiles/data/data_histories.cpp b/Telegram/SourceFiles/data/data_histories.cpp
index 7b4aa17ca..b486639eb 100644
--- a/Telegram/SourceFiles/data/data_histories.cpp
+++ b/Telegram/SourceFiles/data/data_histories.cpp
@@ -423,7 +423,6 @@ void Histories::sendReadRequest(not_null<History*> history, State &state) {
 		const auto finished = [=] {
 			const auto state = lookup(history);
 			Assert(state != nullptr);
-			Assert(state->sentReadTill >= tillId);
 
 			if (state->sentReadTill == tillId) {
 				state->sentReadDone = true;
@@ -432,6 +431,8 @@ void Histories::sendReadRequest(not_null<History*> history, State &state) {
 				} else {
 					state->sentReadTill = 0;
 				}
+			} else {
+				Assert(!state->sentReadTill || state->sentReadTill > tillId);
 			}
 			sendReadRequests();
 			finish();