fix style issue

Author: maminrayej

src/wasi/mod.rs

@@ -31,8 +31,21 @@ pub type time_t = c_longlong;
 pub type c_double = f64;
 pub type c_float = f32;
 pub type ino_t = u64;
-#[cfg(not(target_vendor = "wasmer"))]
-pub type sigset_t = c_uchar;
+cfg_if! {
+    if #[cfg(target_vendor = "wasmer")] {
+        s! {
+            #[repr(C)]
+            pub struct sigset_t {
+                #[cfg(target_pointer_width = "32")]
+                __val: [u32; 2],
+                #[cfg(target_pointer_width = "64")]
+                __val: [u64; 1],
+            }
+        }
+    } else {
+        pub type sigset_t = c_uchar;
+    }
+}
 pub type suseconds_t = c_longlong;
 pub type mode_t = u32;
 pub type dev_t = u64;

src/wasi/wasix.rs

@@ -209,14 +209,6 @@ s! {
         __size: [u64; 7],
     }
 
-    #[repr(C)]
-    pub struct sigset_t {
-        #[cfg(target_pointer_width = "32")]
-        __val: [u32; 2],
-        #[cfg(target_pointer_width = "64")]
-        __val: [u64; 1],
-    }
-
     #[repr(C)]
     pub struct siginfo_t {
         pub si_signo: ::c_int,
@@ -1031,4 +1023,4 @@ pub fn W_STOPCODE(sig: ::c_int) -> ::c_int {
 
 pub fn QCMD(cmd: ::c_int, type_: ::c_int) -> ::c_int {
     (cmd << 8) | (type_ & 0x00ff)
-}
+}