hostname: reduce range of unsafe

Author: oech3

src/uu/hostname/src/hostname.rs

@@ -38,10 +38,8 @@ mod wsa {
     pub(super) struct WsaHandle(());
 
     pub(super) fn start() -> io::Result<WsaHandle> {
-        let err = unsafe {
-            let mut data = std::mem::MaybeUninit::<WSADATA>::uninit();
-            WSAStartup(0x0202, data.as_mut_ptr())
-        };
+        let mut data = std::mem::MaybeUninit::<WSADATA>::uninit();
+        let err = unsafe { WSAStartup(0x0202, data.as_mut_ptr()) };
         if err == 0 {
             Ok(WsaHandle(()))
         } else {
@@ -51,10 +49,8 @@ mod wsa {
 
     impl Drop for WsaHandle {
         fn drop(&mut self) {
-            unsafe {
-                // This possibly returns an error but we can't handle it
-                let _err = WSACleanup();
-            }
+            // This possibly returns an error but we can't handle it
+            let _ = unsafe { WSACleanup() };
         }
     }
 }