[patch] getgrouplist.3: tfix in example

[Fedor Lapshin <fe.lap.prog@xxxxxxxxx>]

In example of getgrouplist, if getpwnam returns NULL, the program
exits. The exit code EXIT_SUCCESS looks like a mistake, since the
program also calls perror right before.

This patch changes the exit code to EXIT_FAILURE.

Best regards, Fedor.

---
 man3/getgrouplist.3 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/man3/getgrouplist.3 b/man3/getgrouplist.3
index 41389b6c3..239913ce6 100644
--- a/man3/getgrouplist.3
+++ b/man3/getgrouplist.3
@@ -165,7 +165,7 @@ main(int argc, char *argv[])
     pw = getpwnam(argv[1]);
     if (pw == NULL) {
         perror("getpwnam");
-        exit(EXIT_SUCCESS);
+        exit(EXIT_FAILURE);
     }
 \&
     /* Retrieve group list. */
-- 
2.34.1