message: style: remove unnecessary braces
  They were needed to define the scope of `LOCK(cs_vNodes)` which was
  removed in the previous commit. Re-indent in a separate commit to ease
  review (use `--ignore-space-change`).
diff: @@ -1364,7 +1364,6 @@ bool CConnman::GenerateSelectSet(const std::vector<CNode*>& nodes,
  recv_set.insert(hListenSocket.socket);
  }
  - {
  for (CNode* pnode : nodes) {
  // Implement the following logic:
  // * If there is data to send, select() for sending data. As this only
  @@ -1397,7 +1396,6 @@ bool CConnman::GenerateSelectSet(const std::vector<CNode*>& nodes,
  recv_set.insert(pnode->hSocket);
  }
  }
  - }
  return !recv_set.empty() || !send_set.empty() || !error_set.empty();
  }
  