musl: make epoll_event packed on x86

Author: rmehri01

src/unix/linux_like/mod.rs

@@ -286,11 +286,7 @@ cfg_if! {
 s_no_extra_traits! {
     #[cfg_attr(
         any(
-            all(
-                target_arch = "x86",
-                not(target_env = "musl"),
-                not(target_os = "android")
-            ),
+            all(target_arch = "x86", not(target_os = "android")),
             target_arch = "x86_64"
         ),
         repr(packed)