Add LOG_AT macro when linking with glog

1. Call done directly in StartConnect to avoid race with OnConnected in StopConnect
2. Dangling pointer in OnServerStreamCreated
3. Invalid _chunk_stream_id in closeStream and deleteStream

add SIGTERM handle for brpc controller

Fix typo in client.md

`cntl` is not a pointer here

Update benchmark.md

拼写错误吧？