Fix possible file descriptor leak
Fix possible file descriptor leak

swoole_file_get_contents may return without closing an open file descriptor.
AJSoft/swoole-src,AJSoft/swoole-src,tutanhamon/swoole-src,AJSoft/swoole-src,LinkedDestiny/swoole-src,swoole/swoole-src,tutanhamon/swoole-src,swoole/swoole-src,swoole/swoole-src,LinkedDestiny/swoole-src,AJSoft/swoole-src,LinkedDestiny/swoole-src,LinkedDestiny/swoole-src,tutanhamon/swoole-src,swoole/swoole-src,LinkedDestiny/swoole-src,tutanhamon/swoole-src,LinkedDestiny/swoole-src,AJSoft/swoole-src,swoole/swoole-src,LinkedDestiny/swoole-src,tutanhamon/swoole-src,swoole/swoole-src,AJSoft/swoole-src,tutanhamon/swoole-src,tutanhamon/swoole-src,AJSoft/swoole-src,swoole/swoole-src