nologin: Style fixes

[Josiah Frentsos]

Index: nologin.c
===================================================================
RCS file: /cvs/src/sbin/nologin/nologin.c,v
retrieving revision 1.9
diff -u -p -r1.9 nologin.c
--- nologin.c   12 Jul 2021 15:09:19 -0000      1.9
+++ nologin.c   18 Nov 2022 16:59:31 -0000
@@ -25,7 +25,6 @@
  * SUCH DAMAGE.
  */
 
-#include <sys/types.h>
 #include <err.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ -38,7 +37,6 @@
 
 #define DEFAULT_MESG   "This account is currently not available.\n"
 
-/*ARGSUSED*/
 int
 main(int argc, char *argv[])
 {
@@ -51,15 +49,15 @@ main(int argc, char *argv[])
        if (pledge("stdio rpath", NULL) == -1)
                err(1, "pledge");
 
-       nfd = open(_PATH_NOLOGIN_TXT, O_RDONLY);
-       if (nfd == -1) {
+       if ((nfd = open(_PATH_NOLOGIN_TXT, O_RDONLY)) == -1) {
                write(STDOUT_FILENO, DEFAULT_MESG, strlen(DEFAULT_MESG));
-               exit (1);
+               exit(1);
        }
 
        while ((nrd = read(nfd, nbuf, sizeof(nbuf))) != -1 && nrd != 0)
                write(STDOUT_FILENO, nbuf, nrd);
-       close (nfd);
 
-       exit (1);
+       close(nfd);
+
+       exit(1);
 }