From 8077faed681d543942e3ff5550b4d893443b7329 Mon Sep 17 00:00:00 2001
From: "andrew (from workstation)" <andrew@arch>
Date: Sun, 17 May 2020 12:34:14 +0200
Subject: [PATCH] fixes

---
 td/telegram/files/FileManager.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/td/telegram/files/FileManager.cpp b/td/telegram/files/FileManager.cpp
index f1e71892..efa3833f 100644
--- a/td/telegram/files/FileManager.cpp
+++ b/td/telegram/files/FileManager.cpp
@@ -3716,13 +3716,14 @@ void FileManager::memory_cleanup() {
             /* DESTROY ASSOCIATED QUERIES */
             for (auto &query_id : queries_container_.ids()) {
               auto query = queries_container_.get(query_id);
-              if (file_id.get() == query->file_id_.get()) {
+              if (query != nullptr && file_id.get() == query->file_id_.get()) {
                 on_error(query_id, Status::Error(400, "FILE_DOWNLOAD_RESTART"));
               }
             }
 
             /* DESTROY ASSOCIATED NODE */
-            file_nodes_[file_id_info_[file_id.get()].node_id_] = nullptr;
+            auto file_node_id = file_id_info_[file_id.get()].node_id_;
+            if (file_node_id != 0) { file_nodes_[file_node_id] = nullptr; }
 
             /* DESTROY ASSOCIATED FILE */
             empty_file_ids_.push_back(file_id.get());
@@ -3732,7 +3733,7 @@ void FileManager::memory_cleanup() {
           /* DESTROY MAIN QUERY */
           for (auto &query_id : queries_container_.ids()) {
             auto query = queries_container_.get(query_id);
-            if (((int32) i) == query->file_id_.get()) {
+            if (query != nullptr && ((int32) i) == query->file_id_.get()) {
               on_error(query_id, Status::Error(400, "FILE_DOWNLOAD_RESTART"));
             }
           }