epoll error on Linux x86.64

[slavapestov]

Saw this; a ENOENT return from epoll_ctl() means that the given file descriptor was not part of the epoll:

Error in thread 17 (I/O wait, [ quotation quotation while ]):

Unix system call failed:

No such file or directory (2)

(U) Quotation: set-namestack init-catchstack self quot>> call -> stop Quotation: [ [ call ] keep -> [ loop ] curry when ]
Word: loop
(U) Quotation: [ over [ call ] dip -> ]
Word: keep
(U) Quotation: [ uncompose [ call ] dip -> call ]
Method: M\ compose call
(O) Word: io-thread
(O) Word: handle-events
(O) Word: handle-event
(O) Word: io-error
(O) Word: (io-error)
(O) Word: unix-error
(O) Method: M\ object throw
(U) Quotation: [
63 special-object error-thread set-global
continuation -> error-continuation set-global
[ original-error set-global ] [ rethrow ] bi
]

[slavapestov]

Problem came up with epoll returned > 1 event. The struct was packed, so it was defined wrong. Tested fix, seems to work.