Do not change servers when retrying sync RPC

src/connection.cpp

@@ -57,6 +57,7 @@ ConnectionLoader::ConnectionLoader(MainWindow* main, Controller* rpc)
 
 ConnectionLoader::~ConnectionLoader()
 {
+    DEBUG("destroying ConnectionLoader");
     delete isSyncing;
     delete connD;
     delete d;
@@ -244,12 +245,12 @@ void ConnectionLoader::doAutoConnect()
         }, [=](auto) mutable {
             DEBUG("sync rpc error! server=" << config->server);
             // continually retry sync RPC until it succeeds
-            // change server each time it fails
+            // don't change server each time it fails
             bool failed = true;
             do {
-                config->server = Settings::getRandomServer();
-                auto connection = makeConnection(config);
-                DEBUG("changed server to " << config->server);
+                // config->server = Settings::getRandomServer();
+                // auto connection = makeConnection(config);
+                // DEBUG("changed server to " << config->server);
                 connection->doRPC("sync", "", [=](auto) mutable {
                     DEBUG("sync success with server=" << config->server);
                     failed = false;