[PATCH] getgrouplist.3: EXAMPLES: improve error handling for getpwnam(3)

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

Signed-off-by: Fedor Lapshin <fe.lap.prog@xxxxxxxxx>
---
 man3/getgrouplist.3 | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/man3/getgrouplist.3 b/man3/getgrouplist.3
index 41389b6c3..e2e640d56 100644
--- a/man3/getgrouplist.3
+++ b/man3/getgrouplist.3
@@ -162,10 +162,12 @@ main(int argc, char *argv[])
 \&
     /* Fetch passwd structure (contains first group ID for user). */
 \&
+    errno = 0;
     pw = getpwnam(argv[1]);
     if (pw == NULL) {
-        perror("getpwnam");
-        exit(EXIT_SUCCESS);
+        if (errno) perror("getpwnam");
+        else fprintf(stderr, "no such user\en");
+        exit(EXIT_FAILURE);
     }
 \&
     /* Retrieve group list. */
--
2.34.1