Fix: read from pointer after free
Fix: read from pointer after free

Reference: Coverity CID #1397951
LinkedDestiny/swoole-src,swoole/swoole-src,swoole/swoole-src,AJSoft/swoole-src,LinkedDestiny/swoole-src,AJSoft/swoole-src,tutanhamon/swoole-src,LinkedDestiny/swoole-src,AJSoft/swoole-src,tutanhamon/swoole-src,tutanhamon/swoole-src,tutanhamon/swoole-src,tutanhamon/swoole-src,tutanhamon/swoole-src,tutanhamon/swoole-src,AJSoft/swoole-src,swoole/swoole-src,LinkedDestiny/swoole-src,swoole/swoole-src,AJSoft/swoole-src,LinkedDestiny/swoole-src,LinkedDestiny/swoole-src,AJSoft/swoole-src,AJSoft/swoole-src,swoole/swoole-src,swoole/swoole-src,LinkedDestiny/swoole-src,swoole/swoole-src