fix: make all fields of aiocb public

Author: Berrysoft

src/unix/solarish/mod.rs

@@ -433,9 +433,9 @@ s! {
         pub aio_reqprio: ::c_int,
         pub aio_sigevent: sigevent,
         pub aio_lio_opcode: ::c_int,
-        _aio_resultp: ::aio_result_t,
-        _aio_state: ::c_int,
-        _aio_pad: ::c_int
+        pub aio_resultp: ::aio_result_t,
+        pub aio_state: ::c_int,
+        pub aio__pad: [::c_int; 1],
     }
 
     pub struct exit_status {