unix: zero epoll_event before use

Valgrind will emit the following error on a system where `int` is 32
bits:

==21616== Syscall param epoll_ctl(event) points to uninitialised byte(s)
==21616==    at 0x693E06A: epoll_ctl (syscall-template.S:84)
==21616==    by 0x529F35B: uv__io_poll (in .../libuv/libuv.so)
==21616==    by 0x528AE62: uv_run (in .../libuv/libuv.so)
[...]
==21616==  Address 0x1ffeffc8ec is on thread 1's stack
==21616==  in frame #1, created by uv__io_poll (???:)

We only initialise e.events and e.data.fd, meaning half of
e.data (the 32 bits not covered by the 4-byte `fd`) is
uninitialised.

PR-URL: https://github.com/libuv/libuv/pull/1996
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Santiago Gimeno <santiago.gimeno@gmail.com>

0 files changed, 0 insertions, 0 deletions