unistd: groups: drop -> |_| ()

Author: JayH5

src/unistd.rs

@@ -1007,7 +1007,7 @@ pub fn setgroups(groups: &[Gid]) -> Result<()> {
         libc::setgroups(groups.len() as setgroups_ngroups_t, groups.as_ptr() as *const gid_t)
     };
 
-    Errno::result(res).map(drop)
+    Errno::result(res).map(|_| ())
 }
 
 /// Calculate the supplementary group access list. Gets the group IDs of all
@@ -1090,14 +1090,14 @@ pub fn initgroups(user: &CString, group: Gid) -> Result<()> {
     let gid: gid_t = group.into();
     let res = unsafe { libc::initgroups(user.as_ptr(), gid as initgroups_group_t) };
 
-    Errno::result(res).map(drop)
+    Errno::result(res).map(|_| ())
 }
 
 #[inline]
 pub fn pause() -> Result<()> {
     let res = unsafe { libc::pause() };
 
-    Errno::result(res).map(drop)
+    Errno::result(res).map(|_| ())
 }
 
 #[inline]