[PATCH] manual: check the correct variable in SIOCATMARK example [BZ #33093]

[Collin Funk]

* manual/socket.texi (Out-of-Band Data): Check the atmark variable which
is set by the ioctl instead of the undefined result variable.
---
 manual/socket.texi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/manual/socket.texi b/manual/socket.texi
index 56948073d5..2ed8112344 100644
--- a/manual/socket.texi
+++ b/manual/socket.texi
@@ -2999,7 +2999,7 @@ @node Out-of-Band Data
       success = ioctl (socket, SIOCATMARK, &atmark);
       if (success < 0)
         perror ("ioctl");
-      if (result)
+      if (atmark)
         return;
 
       /* @r{Otherwise, read a bunch of ordinary data and discard it.}
-- 
2.51.0