onClose隔一段时间后会再重复回调一次，同一个fd的

What did you do? If possible, provide a simple script for reproducing the error.

我在回调函数onClose中对关闭的客户端写入的日志并写入了fd，断开是属于心跳包发送超时服务器主动断开客户端的。
What did you expect to see?
What did you see instead?

发现隔段时间后会重复收到一次同个fd的回调，在写入的数据库中看到的
What version of Swoole are you using (show your php --ri swoole)?

swoole

Swoole => enabled
Author => Swoole Team <team@swoole.com>
Version => 4.5.8
Built => Nov 21 2020 08:09:18
coroutine => enabled
trace_log => enabled
epoll => enabled
eventfd => enabled
signalfd => enabled
cpu_affinity => enabled
spinlock => enabled
rwlock => enabled
sockets => enabled
openssl => OpenSSL 1.0.2k-fips  26 Jan 2017
http2 => enabled
json => enabled
pcre => enabled
zlib => 1.2.7
mutex_timedlock => enabled
pthread_barrier => enabled
futex => enabled
mysqlnd => enabled
async_redis => enabled

Directive => Local Value => Master Value
swoole.enable_coroutine => On => On
swoole.enable_library => On => On
swoole.enable_preemptive_scheduler => Off => Off
swoole.display_errors => On => On
swoole.use_shortname => Off => Off
swoole.unixsock_buffer_size => 8388608 => 8388608

What is your machine environment used (show your uname -a & php -v & gcc -v) ?

# uname -a
Linux VM-0-15-centos 3.10.0-1127.19.1.el7.x86_64 #1 SMP Tue Aug 25 17:23:54 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

# php -v 
Zend Engine v3.3.26, Copyright (c) 1998-2018 Zend Technologies
    with Zend OPcache v7.3.26, Copyright (c) 1999-2018, by Zend Technologies

# gcc -v
使用内建 specs。
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/4.8.5/lto-wrapper
目标：x86_64-redhat-linux
配置为：../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-linker-hash-style=gnu --enable-languages=c,c++,objc,obj-c++,java,fortran,ada,go,lto --enable-plugin --enable-initfini-array --disable-libgcj --with-isl=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/isl-install --with-cloog=/builddir/build/BUILD/gcc-4.8.5-20150702/obj-x86_64-redhat-linux/cloog-install --enable-gnu-indirect-function --with-tune=generic --with-arch_32=x86-64 --build=x86_64-redhat-linux
线程模型：posix
gcc 版本 4.8.5 20150623 (Red Hat 4.8.5-39) (GCC)

swoole / swoole-src

onClose隔一段时间后会再重复回调一次，同一个fd的 #4073