[hackers] [sbase] chgrp: Only check errno if getgrnam() fails || sin

[git]

commit 83e94e922e688c4b090d96214651e687eb449654
Author: sin <s...@2f30.org>
Date:   Sun Dec 21 12:12:38 2014 +0000

    chgrp: Only check errno if getgrnam() fails

diff --git a/chgrp.c b/chgrp.c
index 78ee68b..52ad1f0 100644
--- a/chgrp.c
+++ b/chgrp.c
@@ -50,10 +50,12 @@ main(int argc, char *argv[])
 
        errno = 0;
        gr = getgrnam(argv[0]);
-       if (errno)
-               eprintf("getgrnam %s:");
-       else if (!gr)
-               eprintf("getgrnam %s: no such group\n", argv[0]);
+       if (!gr) {
+               if (errno)
+                       eprintf("getgrnam %s:", argv[0]);
+               else
+                       eprintf("getgrnam %s: no such group\n", argv[0]);
+       }
        gid = gr->gr_gid;
 
        while (*++argv) {