fix: address remaining PR 212 review issues

src/client/client_send.c

@@ -658,6 +658,7 @@ int send_files(Config* config) {
   if (config->use_delete) {
     if (send_delete_manifest(client->file_descriptor, manifest) != 0) {
       array_list_delete(manifest);
+      manifest = NULL;
       goto send_fail;
     }
     array_list_delete(manifest);

src/client/scanner.c

@@ -667,6 +667,11 @@ Chunk* parallel_scanner_next(ParallelScanner* ps) {
   }
   if (ps->num_threads == 0) {
     mtx_lock(&ps->result_mutex);
+    if (!queue_is_empty(ps->result_queue)) {
+      Chunk* chunk = queue_dequeue(ps->result_queue);
+      mtx_unlock(&ps->result_mutex);
+      return chunk;
+    }
     ps->done = true;
     mtx_unlock(&ps->result_mutex);
     return NULL;

src/server/server.c

@@ -106,6 +106,7 @@ void handler(int file_descriptor) {
       protocol_session_unbind();
       return;
     }
+    context->session.total_allocated_bytes = session.total_allocated_bytes;
     thrd_t receiver, writer;
     bool receiver_created = thrd_create(&receiver, receive_thread, context) == thrd_success;
     bool writer_created = false;