[host][darwin]: fix Users

Author: shirou

host/host_darwin.go

@@ -64,6 +64,9 @@ func UsersWithContext(ctx context.Context) ([]UserStat, error) {
 		return ret, err
 	}
 
+	// Skip macOS utmpx header part
+	buf = buf[604:]
+
 	u := Utmpx{}
 	entrySize := int(unsafe.Sizeof(u))
 	count := len(buf) / entrySize

host/host_test.go

@@ -89,6 +89,7 @@ func TestUsers(t *testing.T) {
 		if u == empty {
 			t.Errorf("Could not Users %v", v)
 		}
+		t.Log(u)
 	}
 }