From 0fe0f45944c0e71f97ff1235dcc2244b809d754e Mon Sep 17 00:00:00 2001
From: Tobias Fella <fella@posteo.de>
Date: Mon, 28 Dec 2020 00:07:37 +0000
Subject: [PATCH] Fix segfault/assert when logging out of account

---
 src/controller.cpp          | 2 +-
 src/matriximageprovider.cpp | 6 ++++++
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/controller.cpp b/src/controller.cpp
index 4c72a0948..85cdc28f2 100644
--- a/src/controller.cpp
+++ b/src/controller.cpp
@@ -196,7 +196,7 @@ void Controller::logout(Connection *conn, bool serverSideLogout)
     conn->stopSync();
     Q_EMIT conn->stateChanged();
     Q_EMIT conn->loggedOut();
-    if (!m_connections.isEmpty()) {
+    if (conn == activeConnection() && !m_connections.isEmpty()) {
         setActiveConnection(m_connections[0]);
     } else {
         setActiveConnection(nullptr);
diff --git a/src/matriximageprovider.cpp b/src/matriximageprovider.cpp
index b9c632d72..80644b2d2 100644
--- a/src/matriximageprovider.cpp
+++ b/src/matriximageprovider.cpp
@@ -54,6 +54,9 @@ ThumbnailResponse::ThumbnailResponse(QString id, QSize size)
 
 void ThumbnailResponse::startRequest()
 {
+    if (!Controller::instance().activeConnection()) {
+        return;
+    }
     // Runs in the main thread, not QML thread
     Q_ASSERT(QThread::currentThread() == Controller::instance().activeConnection()->thread());
     job = Controller::instance().activeConnection()->getThumbnail(mediaId, requestedSize);
@@ -94,6 +97,9 @@ void ThumbnailResponse::prepareResult()
 
 void ThumbnailResponse::doCancel()
 {
+    if (!Controller::instance().activeConnection()) {
+        return;
+    }
     // Runs in the main thread, not QML thread
     if (job) {
         Q_ASSERT(QThread::currentThread() == job->thread());