Fix makedev function signature on Apple targets

Author: nohajc

src/unix/bsd/apple/mod.rs

@@ -3,10 +3,7 @@
 //! This covers *-apple-* triples currently
 
 use crate::prelude::*;
-use crate::{
-    cmsghdr,
-    off_t,
-};
+use crate::{cmsghdr, off_t};
 
 pub type wchar_t = i32;
 pub type clock_t = c_ulong;
@@ -5056,16 +5053,16 @@ safe_f! {
         _WSTATUS(status) == _WSTOPPED && WSTOPSIG(status) != 0x13
     }
 
-    pub const fn makedev(major: i32, minor: i32) -> dev_t {
-        (major << 24) | minor
+    pub const fn makedev(major: u32, minor: u32) -> dev_t {
+        ((major << 24) | minor) as dev_t
     }
 
-    pub const fn major(dev: dev_t) -> i32 {
-        (dev >> 24) & 0xff
+    pub const fn major(dev: u32) -> i32 {
+        ((dev >> 24) & 0xff) as i32
     }
 
-    pub const fn minor(dev: dev_t) -> i32 {
-        dev & 0xffffff
+    pub const fn minor(dev: u32) -> i32 {
+        (dev & 0xffffff) as i32
     }
 }