message: reactor.http.client: Fix warning.
diff: @@ -657,7 +657,7 @@ ELLE_TEST_SCHEDULED(download_progress)
  server.sem.release();
  delay();
  PERSIST_CHECK_EQUAL(r.progress(), (Request::Progress{0,payload_length,0,0}));
  - for (unsigned i=0; i < payload_length; ++i)
  + for (int i = 0; i < payload_length; ++i)
  {
  server.sem.release();
  delay();
  